Surface Areas and Volumes | NCERT Exercises 11.1 and 11.2 | Chapter 11 | Arsh Ma’am | Class 9

[@BYJUSClass910]

Hello kids! Check your understanding of the Surface Areas and Volumes chapter by answering these 5 quick questions in the form: forms.gle/UAuya2hyBmwbDyn86

[@PrathaUpadhyay-f2x]

Hello

[@dealingwithgames1475]

Maa mg

[@chitraketsingh5972]

The correct answer is 3.5 cm❤❤❤❤❤

[@sangitagupta3083]

Mam in my school 7 to 12 chapter is remeining...

[@priyajain8860]

@@BYJUSClass910 Hi

[@astha--]

VERY HELPFUL SESSION MAM:) MAM PLEASE BRING PRACTICE SESSIONS OF EXAMPLER AND OTHER REFERENCE BOOKS OF ALL THE CHAPTERS........ 🔴HOMEWORK- QUESTION - 52:30 II) surface area of sphere= 4πr² Or, 4*22/7*(21/2)² = 1386cm² III) surface area of sphere= 4πr² Or, 4*22/7*(3.5/2)² = 38.5cm² QUESTION- 1:05:10 Surface area of sphere= 4πr²=154cm² Or, 4*22/7* r²=154cm² Or, r²= (154*7)/(22*4) Or, r²= 12.25 cm² Or, r=√(12.25cm²) Or, r= 3.5cm(answer)

[@TheRealAbhimanyu]

Thank you🙏🙏❤🙏🙏 so much mam For the session. Really Enjoyed it. 😍😃 Homework: - {Ex-11.2 questions no. 1 ,2,6} Question no :-1 (48:44) Answer: - TSA of Spheres 4πr² of given Radius: - i) 10.5cm, TSA of sphere 4πr² =4×22/2×10.5×10.5= 1386cm² ii) 5.6cm, TSA of sphere 4πr² =4×22/2×5.6×5.6=394.24cm² iii) 14cm TSA of sphere 4πr² =4×22/2×14×14=2464cm² Question no. 2 (52:35) TSA of sphere 4πr² of given diameter: - I) 14cm, r=7cm TSA of sphere 4πr² =4×22/2×7×7=616cm² II) 21cm, r=10.5cm TSA of sphere 4πr² =4×22/2×10.5×10.5 =1386cm² III) 3.5m, r=3.5/2=1.75m TSA of sphere 4πr² =4×22/2×1.75×1.75=38.5m² Question no. 6 (1:05:37) TSA of sphere 4πr² =4×22/2× r²=154cm²(given) 4πr²=154cm² r²=154/4π r²=154×7/4×22 on solving we get = r²=49/4 r=√49/4, r=7/2=3.5cm Answer Mam we want practice session of Quadrilateral, Herons Formula and Circle, for Unit test II and later Rest of the chapters for Final Examination. Thank you so much mam once Again. 🙏🙏😍🙏🙏

[@KavyaTy.]

You are a Genius likely you have typed whole calculations ...

[@priyasandhu1027]

Thank you for the amazing session mam ❤❤and keep blessing 😀😀 🔺 Homework questions no. 1 Exercise 11.2 Ques-2 (ii) - diameter = 21cm Radius=d/2 = 21/2 TSA = 4πr^2 4 * 22/7 * 21/2 * 21/2 = 22 * 3* 21 = 1386 cm^2 Ques - 2 ( III) = diameter = 3.5 m Radius = d/2 = 35/ 20 TSA = 4πr^2 4 * 22/7 * 35/20 * 35/20 11* 35 / 10 385 /10 38.5 🔺 Homework questions no. 2 Exercise 11.2 Question - 6 Answer = Surface area of sphere = 154cm^2 4πr^2 = 154 r^2 = 154 * 7/ 4* 22 r^2 = 49/4 r^2 = (7/2)^2 r= 7/2 Again thank you for the session mam and keep blessing 😀😀😀 Mam plsss bring a session of solving different types of reference books and also bring of competency based question 😀😀😀😀😀 For all chapter as best practices And plss bring these sessions faster as my pre board is arriving in 1st of the week of December 😀😀😀

[@GurkomalSingh-yc7gr]

Hi Priya

[@Prantajyoti-rv4tv]

Thank you ma'am for this helpful session 😊🎊🎊🙏🙏🙏🙏🙏❕ 1️⃣ Homework : (i) given, diameter = 14cm radius, r = 14/2 = 7 cm Surface area of the sphere= 4πr² =4×22/7×7² = 616 cm² (ii) given, diameter = 21 cm radius,r = 21/2 cm Surface area of the sphere = 4πr² = 4×22/7×(21/2)² =1386 cm² (iii) given, diameter= 3.5 m radius,r = 3.5/2 m Surface area of the sphere = 4πr² =4×22/7×(3.5/2)² =38.5 m² 2️⃣ Homework: radius, r = ? Surface area of the sphere =4πr² 154cm². =4×22/7×r² r². = (7/2)² r. =3.5 cm

[@MOKSHTKD7]

❤

[@HansikaJangid-sb1lk]

Legends are watching this one day before exam 😅😂

[@bhavdeepkaskurthi8050]

Oh how do you know I am also doing that

[@NaitikLachwani]

Today is my exam 😂😂

[@Lovelysingh-d2i]

One day ❌one hour✅

[@harpreetkaurkhalsa38]

Yesss

[@ParamJoshi-rb5ju]

Haa😂😂😂😂

[@suchitrasalve2952]

MAM THANKS A LOT FOR THIS WONDERFUL SESSION MAM FOR PRACTICE WE SHOULD SOLVE SOME SAMPLE PAPERS FROM CBSE IF AVAILABLE

[@shubhangikshirsagar5054]

More questions😊 you are teaching very good and I am understanding all

[@XD1-ggs]

Your 35:50 pe ans galat h mam 10 se multiply bhi hoga then 5500 ans hoga

[@sanjitadasbayan4503]

Yes we want more questions from rd sharma etc...

[@brave_buddy327]

Yeah.. especially from ncert exemplar and rs Agarwal

[@kanhasingh8150]

Bhai ye ncert ke questions h

[@adarshguhan8157]

Trie

[@Yashrajchouhan-i9j]

1:34

[@AYUSHRANJAN-ir9dr]

Yes mam we want more and more question practice from rs agrwal rd sharma ncert exampler

[@mymisschaudhary-ot6wc]

48:49 only 1 chapter is left that is ch8 quadrilaterals only for final exam by the way ma'am tommorow is my exam of maths 18-12-2023 (monday)

[@adnananis8940]

No one asked👍

[@meherveditha]

we need more classes with more reference books like RD Sharma, RS Aggarwal etc

[@Md_Sahil15]

@@meherveditha Do u want reference book questions

[@KRITIRAJPUT75]

So helpful session mam ✨ Home work 🔴 Q2. 2 Given diameter = 21 Radius = 21/ 2 Formula = 4πr2 4*22/7*21/2*21/2 1386 cm2 Q2. 3 Same like above question But ans= 38.5 m2 Q6 Formula =4πr2 154=4*22/7*r2 49/4=r2 7/2=r 3.5 = r Again thank you so much

[@adarshguhan8157]

Accha bachha

[@Pushpatomer0]

Very well explanation mam thanks😊

[@ashatiwari7049]

Ques-6 ka answer hai surface area 4pi r square and the choice for very important questions Jo exam based hai vo wali series li jaye and mam you teach very excellent my paper was full mark in maths thank you so much

[@shaikhfaiz7338]

Thank you mam❤

[@PrathaUpadhyay-f2x]

Hello mam your teaching trick is awesome

[@shreewaligupta6490]

Very Helpful Session Mam Really Enjoyed a lot😄❤ 🔺HOMEWORK🔻 Ex. 11.2 Q.2 ii) 1386 cm^2 iii) 269.5 cm^2 Q.6 radius = 3.5 cm I wish that BYJUS would bring the MATHS OLYMPIAD session. It will be beneficial for the Maths Olympiad which is on 14 December😊

[@adarshguhan8157]

Mam this is the best yet channel for math your explanation is the best after seeing your explanation I even joined the BYJUS ncert course 😊😊

[@adarshguhan8157]

Yea bro same

[@bhavyanarayana5545]

❤❤❤❤❤ Thanks mam for your explanation

[@kishlaykumar3580]

Fantastic session mam ❤❤❤

[@SG.ANIMATES]

Can anyone can tell me is cube and cylinder exercise are delted or not

[@Cricketshorts5.8]

Deleted bro

[@DileepKumar-pz5fu]

It was a very useful session mam Q6:given :surface area=154cm^2 Surface area of of sphere=4

[@sheelapatidar9595]

Good evening mam, I am Vedika😊 ❤Thank you for giving such useful session😊😊 Ex.11.2 Q1) 1) 1386cm^2 2) 394cm^2 3)2464cm^2 Q2) 1)616cm^2 2) 1386cm^2 3) 38.5cm^2 🛑Homework Question: Q6) surface area of sphere=154cm^2 And radius= ? 4πr^2 = 154cm^2 4 x 22/7 x r^2 = 154cm^2 r^2 = 154 x 7 / 22 x 4 r^2 = 12.25 r = √12.25 r = √3.5^2 r = 3.5cm So, the radius of the sphere is 3.5 cm.

[@prasadyvd3900]

Thank you so much ❤❤ because of this I got confidence to get nice marks

[@RudrakshThakur-r7l]

Mam mujhe circle ch ka measurment sums me dout hai

[@Productiveindianmuslim]

Mam plz give some revision for annual for class 9th💭

[@trinathmishal5228]

I like your class miss

[@AmanKumar-hz4so]

Thnku soo much mam for this session . Very helpful thnku once again

[@afsaramakandar]

I am watching it just before exam 😅😅 tommoro 16-12-2024

[@meghanarepaka3141]

Yes mam we are enjoying the session

[@akshkumar1751]

Rare boy is seeing the Q before exam. And it will start is 2 hours ⚔️💯

[@VemulaMahesh-l8c]

One shot is very nice

[@NGSAHIL-p1u]

Thanks ma'am for the revision thanks🙏 so muchh thanks 🙏🙏🙏🙏🙏🙏🙏🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉😊😊😊😊

[@BADBUNNYFF-ej3sc]

36:42 mam apne jab answer nikala to vo 550 tha lekin aap 10 multiply krna bhul gye to answer hai 5500 ..

[@Tmkoc11101]

Thanks mam

[@RudrakshThakur-r7l]

Mam part 2 ka 1 no ka ans 616 cm2

[@Class9_study_material001]

Tq mam for solve this exercise❤❤

[@UPSCwallah-c]

Good night mam❤

[@Deepak_pandit_79]

Thank you so much ma'am ❤️☺️

[@JogenderSingh-s7g]

Thanks 🙏

[@BarsaPatro-nq9mo]

Yes mam want more videos of practice 😊who agreed with me like here 👇

[@komalbishnoi-s4d]

mam link nhi mlii

[@naimakhan2127]

🎉thank you ma'am

[@svhs..teluguaircraft1686]

Mam plz explain triangles chapter . 9th class

[@RudrakshThakur-r7l]

6 no 3.5 radius

[@RinkuSaharia-g6o]

Ma'am you are so beautiful❤

[@komalbishnoi-s4d]

mam link of short veideo

[@Anshika-ch8dr]

Anyone can please send me the link of this chapter oneshot

[@RudrakshThakur-r7l]

Mam rs aggarwal ka solution karwa dejiye na mera exam 23th nov ko hai

[@adithyarohankumar8600]

Mam please do one shot revision of maths like Saurabh sir

[@bangarulokam8562]

11 . 3 and 11.4

[@ThakurSahab-ef8jn]

Thnx mam 👍👍

[@sukhbirkumar495]

165cm²

[@HarshilKanzariya-o1c]

MAM WHEN YOU DO EXTRA QUESTIONS

[@RudrakshThakur-r7l]

Mam ex 11.2 ka Q1 par 1 ka ans 1386cm2

[@Ehasasuke]

Thank you mam ❣️

[@prabirgammingandvlogs9789]

Ex 11.2. 47:36

[@reenachoudhary760]

Jai jai shree rammmmmmmm 🙏🙏🙏🙏🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻

[@Dev-h2s]

Jai shree Ram

[@MohitJogarajiya]

this vidio is so good

[@SuvankarBoy-og6ww]

Nice ❤❤❤

[@kritikajaiswar8801]

Thank you mam we were waiting for it

[@afsaramakandar]

Thank you so much mam 😊

[@AAHIL_656]

Thnkuu mam❤

[@prashantchaudhary3601]

Hii

[@nishamaraiya6542]

3.5 is the answer to the question no.6 😊🥰

[@pravinkumar543]

Mam this is chapter very easy

[@RajudeviMeenasiroli]

Happy children's day 🎉🎉🎉🎉🎉

[@Islamic_world_70]

Triangles and circle

[@akashmalik5022]

🎉❤😮😊

[@nilam1157]

Ma'am circle aur quadrilateral chapter me doute hai

[@manyaslathia3296]

Mam this video is very helpful 👍😊👌😌✅😍😍😍

[@prince_pal_8003]

Mam class 9th main annual main kya kya aa sakta hai batta do mam 2023

[@gururajkalloli365]

Jai shree Ram 🙏🙏🙏🙏🙏🙏🙏🙏

[@33adityasingh16]

Answer is 3.5 of question no.6

[@Tayu24.]

Ma'am mene jab 11.2 ke question no 4 ko numerical solve kar ratio me nikal to answer 1:8 aaraha tha ......

[@tanishkanehul2868]

Mam I am not able to find one short video of surface area and volume 😢

[@DakshTewarivlogs-m8g]

Ans 165cm²❤❤❤❤❤❤

[@Tayu24.]

Yes ma'am we need more

[@pennvizz_notpennywise]

Questions from NCERT EXEMPLAR

[@33adityasingh16]

Mam hw ka answer 3.5 hai

[@Yogeshpal1007]

0.64056 m2

[@PayalPriyadarsaní-u8h]

Thanks mam question solve

[@PramKumawat-q1n]

How to calculate decimal values

[@creativemind-t5v]

Mam answer of hw questions is 3.5

[@poojapareek9054]

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[@surajrana5742]

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[@PrashantChaurasia-uk8il]

❤❤❤❤

[@NitishKumar-f5b]

Mam you looking good ❤❤❤❤😅

[@SantoshYadav-ks4lg]

Q.1=1386,Q.2=3850

[@sapanaupadhayatripathi7619]

maam please take a रेविसिओं with R D sharma

[@sonulathwal9454]

Hiii Mam ❤

[@SushmaRatti]

Mam pls aap samjhaa ke krwayo hR ek ques aap bohot accha Padhye ho don't mean me w ring

[@manaskapil158]

Maam in our school statistic and circle is left

[@chitraketsingh5972]

44:47

[@AzeemKhan-yi6yk]

Thank you ma'am

[@Gamerdemon-xm2rb]

Ans is 165 cm

[@yogeshsharma-s1r]

1244:cm2