Heron’s Formula - Examples | Class 9 Maths Chapter 12

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Sir pura samjaya karo 🤬

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Sir aapne m ki jagah next step me cm lagaya ha

[@Kukiesuniverse]

We can do it like this also.... Like that one que sir said to do it by ourselves... A=195, B=180, C=75 S= P/2 = 225cm √225 (225-195) (225-180) (225-75) √225×30×45×150 We can also take the LCM of these numbers which will be easy while solving.... For ex-: Same question We can write 225 as 5×5×3×3 Do the same of all √5×5×3×3×5×3×2×5×3×3×5×3×5×2 Now take the same numbers √5×3×5×3×2×3×5 Now solve this easily √15×15×30 √225×30.... Nd your ans will be 6750 cm² Thnks

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Introduction : Heron's Formula -Basic Example | 00:00 Example 1 | 1:58 Example 2 | 4:42 Example 3 | 9:39 Example 4 | 14:12 Example 5 | 18:45 Website Overview | 21:56 🎉🎉🎉

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My math exam on 28 /9/23

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Did you pass

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[@RinkuSharma-vx1bq]

Answer of the perimeter of an triangular of afield is 450 m and its sides are in the ratio 13:12:5 (p=450m ,a,b,c=13:12:5=13x,+12x+5x=450(450/30)=15 so 15×13,15×12,15×5=195,180,75 now by herons formula,semi perimeter=450/2 =225,area=√225(225-195)(225-180)(225-75)=√225×30×45×150=√45562500=√(6750)² root was cut by square answer is 6750m²😅😅

[@Kukiesuniverse]

Same ans

[@kaushalyaNandanwa]

Sir for example 4 I got the answer Ans-1550√5 I am doutful bout' the answer so please check it out 😊 And really I am seeing the channel of magnet brains from class 7th (now in 9th) your explanation is superb ✨👀

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Thank you so much for your positive feedback! We're glad you've been enjoying our videos and that they've been helping you in your studies. As for the answer you got for question 4, it looks like you may be right - we'll check it out and let you know for sure. Keep up the good work and thanks for watching!

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you are Best teacher maths ❤

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[@amarjaiswal1649]

H.W Q4 ANS :- 😉 6750m²

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🤟👍👍👍

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You are a very best teacher.

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Wow great sir ji 😊😊

[@RamPrakashPandey01]

sir example 4 the area of triangle=6750cm2

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Sir, with your video I can understand all questions

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Your explation is very nice sir i enjoy to read full video and this is very helpful for me i am so happy to read this

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Sir kya aapke pass hindi class 9 ka hai ki kaise pure SLYABUSS ko pure aache se samaj ke kaise padhe

[@rakeshchachariya8549]

Sir Q-4 Answer is 75root8100 Q-5 Answer is Root900 cm2

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[@vatsalshinde1252]

18:32 sir the ans is 6750 cm^2 after calculating

[@aakashmishra2071]

Bro3750 CM square aayega

[@Blackwarrior333]

Mera bhi 6750 cm^2 hi aaya

[@satyesh69]

meter^2

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You are my favorite teacher sir

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[@pujanikayadav3959]

Sir app mera help kar rahi ho thank you sir

[@NEERAJSINGH-pe8cn]

Hi sir, I loved the way you are teaching. I have a doubt that can we apply your formula for equilateral triangle of root 3 a² divide by 4 directly without showing the solution of semi perimeter. Pls advise.....

[@malasinha4831]

Last and second last question ka answer aa gya mera 😊😊 Last ka answer aaya root under 900 cm square = 30 cm spuare and second last ka 6750 m square 😊😊😊😊

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Tomorrow is my exam and I am learning now 😂

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Very best sir 🤟👍👍👍

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Sir decimal expansion nikal na jaruri h ye toh kafi long method ho ja rha h 😢😢

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Allah bachaey haame maths ke keher se 😅

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Great Teacher and Explanation Experience 👍👍

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Good explanation sir well done 👍 and tomorrow is my maths exam 😢

[@eceditz0053]

I have a doubt. In question 4 the is 375√324cm2 is it right ??

[@meenagahlot12]

No it's 900√33

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Sir What's the anser of question 4 please tell me 😊

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Thank you for watching our educational videos! The answer to question 4 is that you should always maintain a positive attitude and never give up on your dreams! Thank you for your comment and we hope you continue to enjoy our videos!

[@dakshmehan4114]

Let sides are 12x, 13x and 5x. Given that perimeter = 450m → 12x + 13x + 5x =450 → 30x =450 → x = (450/30) = 15 As it is a right angled triangle, area of triangle is (1/2) * base * height = (1/2) * product of small sides → Area = (1/2) * 12x * 5x → Area = 6 * 5 * x * x = 30 x² → Area = 30(15)² = 30(225) = 6750 m²

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Nice explanation sir 👍🏻

[@badboy0578]

Hii sir i have a doubt. How can we solve 1/2 ×13×h=30

[@nischalpandey201]

h=30/6.5

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Sir Bina break kiye agr solve krenge to kya question ka solution glt ho jyegaa ...🤌🏻

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4:31 pe jo question thaa..!?

[@cyc0_gamer]

Sir how do we get value of root 15 through long division method?

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Thanks for your question! We have a great video on our KZbin page that covers long division and the steps to calculate the value of the root of 15. We recommend you check it out and if you have any follow up questions, let us know! Thanks for watching our videos!

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Best teacher ever ❤❤❤

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Sir please explain the how to calculation in formula explain calculation

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[@vickyraj8773]

the perimeter of a triangle field is 450m and its side in the ration 13:12:5 find the area of the triangles sir iss ka answer √6750 aaya kya ye sahi h

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@@cheeyachaturvedi1527 nahi aaya bhai smjha do konsa method sahe he?

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Yes

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Sir please make video on 12.2 exercise because it's not uploaded . I like your teaching way by doing hard work which also motivate me to do sums before you do . 👌 👍

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Sir jo aap under root me break krte he number ko to hum direct multiply kr sakte without breaking.

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Best teacher sir

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[@vanshdynamic6809]

last second question answer 1300 underroot 5cm^2

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Your explanation is very helpful 👌 🙂 👏 nice 💞 👍

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Thank you sir 😊

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Sar aap basics a basics chijon ko explain bahut acche se Karte Hain aapki baat 1 bar Mein samajh a jata hai Lagta Nahin Hai Ki Ham math itna bhi difficult hai Jaise aap padhte ho thank you so much sir

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Sir plz make video on chp statistics

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You are good. Teacher

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Thanks sir aj mara paper hai or ap ki video muze motivate kar ti hI❤

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Sir thank

[@VaishaliChoudhary-wi6vr]

Sir aap ne jo 1st q nahi kar us ka ans 6,750cm²he na 😊

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Mg is my favourite one ❤

[@Ankti5534]

I have question in which which question we use heron's formula I am confused in which question in which triangle we use hair on formula please sir answer me because tomorrow is my test

[@megg_05]

We can use this formula on any triangle if the question is about to find the area of any triangle ( it doesn't matter it isosceles or equilateral or right angled ~~

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sir angle A k opposite side toh small a honi chiye thi aapne toh c le li

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You're very slowly explain bestt

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Same😂😂

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Yes I understand everything 😊

[@India-dk8uf]

The ans of eg 4 is 6750cmsquare

[@amarjaiswal1649]

Sahi hai bhai 6750m² ...😊 But did one mistake 😕 u have written... unit= cm² and unit is m² Take care bro

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U r myy favorite favorite favorite favorite teacher

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sir you made it easier for me

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Nice explanation

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best teacher ever

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Thank you sir..

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Thank you so much sir ☺

[@9c_7_anmolpreetkaur24]

Sir isosceles triangle wale question me underoot 15 ko 3 x 5 likh sakte hai na

[@MagnetBrainsEducation]

Yes, you can represent 15 as 3x5 in an isosceles triangle question.

[@RohitRaj-gu4pp]

Han

[@PreetiKumari-dh1lu]

Sir in 2nd last question 450m was given but in th end you wrote 450cm/2

[@Sugan_kumari7900]

Sir example - 4 answer is 6,750 cm^2 . Sir ,my answer is right ???

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Yes you are best teacher

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ye channel bohot aage jayega

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Kis kis ka paper maths ka 1/2/24ko hh

[@rachanab.k2621]

Mine ans of ex 4 is 1800 underroot 3??? Is it right

[@Nainnotfound]

My answer is 1050 root 30...... help😭😭

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Your explanation is very helpful very nice....🤟👍👌

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Sir agar area same ho to kasa karenga

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Thank you sir!! for this outstanding explanation...This video helps me a lot.I have understood every concept thank you sir again for this video..😊.

[@Iamgungun-g10]

Sir my answer of example 4 is 15 is it correct

[@KARTIKBENIWALJI]

osam sir

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Sir thanku very much i got 70 out of 80 because of u .... Thanku

[@ZUHAIB_001]

Example 4 =6740 cm square

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Good❤❤❤

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My exam is coming soon😢😢

[@nishagoyal2370]

Sir what is the answer of example 4? Plz tell🙏🏻

[@MagnetBrainsEducation]

Hi there! Thanks for watching our video and taking an interest in learning. We're sorry we can't give you the answer to example 4, but we can point you in the right direction. First, make sure you understand the concepts in the example and break down the question step by step. If you're still stuck, consider asking your teacher for help. Good luck!

[@nishagoyal2370]

@@MagnetBrainsEducation sir actually I m getting many different answer's 225√990 2250√9 30√15 Can you plz tell me which is correct 🙏🏻

[@motilalseth7779]

6750m²

[@motilalseth7779]

@@nishagoyal2370 2250√9 is right

[@motilalseth7779]

👍

[@aaravsonali2172]

Sir 3rd example m centimetre nahi metre aayega

[@youraryan8375]

Thank you sir for explained this chapter Heroes formula

[@mudssaralamalam]

6750cm² is correct 💯

[@prashantpatil1951]

Sir 16 ko Apne 4 Ka Square kyo Likha please fast reply sir

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Sir you have no uploaded chapter 9,11 on the channel Can u plz upload it

[@ujalasonkar652]

Thank u sir

[@aabhanagdeve7289]

Is the answer of ex 4 =2250/3

[@Rekha-mi4kg]

Nice sir

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Thank you so much for taking the time to watch our educational videos! We're glad you enjoy them and we hope you continue to learn a lot from them.

[@ShikhaGupta-e3t]

Example 3 answer is 6750msquare