Surface Area of a Square Pyramid | Math with Mr. J

[@MathwithMrJ]

✅ Thanks so much for watching! ✌ ✌ ✌ ✅ Something to keep in mind... Adding the area of the base and the areas of all the lateral faces will work for any pyramid. The formula (SA = B + 1/2 x p x s) that is mentioned in the video only works for regular pyramids though (regular = all sides of the base are the same). For example, it works for square pyramids because all of the lateral faces are the same. For a counter example, this formula does not work for a rectangular pyramid because all of the lateral faces are not the same.

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Our college math teacher is trying to push us to the class as fast as he can to get to the next semester and he doesn’t really go into detail about how to do any of these videos that you’ve made so you’re a literal lifesaver to my grades thank you! Please keep making these

[@MathwithMrJ]

Great to hear that! Glad these are helpful.

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This is college math?

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@@Hi123-vg1rxno it’s middle school

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Thanks for all the help throughout the years Mr. J!

[@MathwithMrJ]

You’re very welcome! Thank you for the comment.

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[@jaiopel]

I’m failing because of triangular prisms grad 8

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[@imluving_kenz]

@@nejihyuga2517 I’m in grade 6. I’m in an extended program so I’m learning 8th grade math right now. This is super confusing

[@marvjetzekielocampo9322]

@@nejihyuga2517 me grade 6 and learning about all surfaces areas

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[@moonofstarmoonofstar7814]

I have been struggling with finding the area of the pyramid but now I know! Thanks Mr.J 👍

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[@Clash_Along]

quick question , why does most of the numbers picked by you is usually lesser than 20 inches more spefically in the single digits ? is it some sort of reference ?

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❤thanks from ff community member for supporting us

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Thank you

[@JewelJawil]

it can be also L.A A= 6 in × 5 in = 30 in² ÷2 = (15 in²) 4 (lateral face) = 60 in² BASE A= 6 in × 6 in = 36 in² S.A= 60 in² + 36 in² = 96 in²

[@virayusokun6397]

Thanks you so much sir

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Tysm my school was not teaching the stuff right and i was confused

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Ty so much

[@donkeykong2699]

I LOVE YOU

[@Lilys_main123]

Im sorry but how did you get 36? Why did you do 6×6? Please reply my test is tomorrow I beg Mr.J

[@AlanMathew-sw6gw]

That because area is length *height. Here both length and height are 6 so id we multiply it we get 36

[@AlanMathew-sw6gw]

The area of square i mean

[@thatguyinpurple7654]

@@AlanMathew-sw6gwWhy wouldn’t it be 6+6+6+6? If the square has 4 6in sides?

[@OptimusPrime2024-s1b]

Do you have a video that shows hot to get the smallest surface area of a pyramid?

[@jararabbas6490]

how to find the area of a cylinder please tell

[@isaiahwarfield9389]

Mr j saved me when my math teacher couldnt..

[@manideesari2456]

Try for this (all in cm) height of pyramid = 3 Base is a square with side = 8 But here we got the total surface area = 112 ( as per your first method) But the correct answer is 144 ( by finding slant height i.e. 5) And in my opinion.... Height of the pyramid from center of the base is not same thing as slant height... And it can't be the same...

[@manideesari2456]

And this question is given in SSC CGL Tier II---> 3rd March 2023

[@NADIAMACK-tu3tc]

BOTH METHODS VERY HELPFULL THANK YOU MR.JAY as soon as i came across your videos they have been super helpful . on April 21-24 im finna take 7th grade milestones so im studying. i really appreciate these videos and now im actually better at surface area i had previously before your videos struggled with SA but now im better

[@JackRating-b8q]

What are you gonna do when the apex is given? I'm a little confused.

[@samuelsierra1004]

The slanted height is not the same as regular height. You need to use Pythagorean theory to actually find the height.

[@dipuhaldar9214]

Sorry MrJ, 5 is the slant height not height of the triangle. by pythagoras theorem, slant height 5 is hypotenuse of triangle with base 6, in this case we'll take it as 3 , then height will be h^2=5^2-3^2 =25-9=16, h =√16=4. then, area of one triangle will be =1/2×6×4=12. area of 4 triangle=4×12=48. now total surface area= 36+48=84 unit^2

[@wajnmountain]

Yeah, but it’s still a surface. It would be useful to find the height if you are trying to do volume, but not necessary for surface area.

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BE MY TEACHER NOW

[@_its.stephanie.rose_]

This was the exact same problem as on my program -- School Yourself...

[@TeacherBon26]

are you sure about the ht of triangle?

[@audiana_auds]

This is helping me do my homework so I can go from a D to a C

[@pianocat2.017]

Excuse but where did you get 15 from?

[@RamJacobSlays]

I thought the formula was SA= 4 (1/2 bh) + S exponent 2

[@Omar-mj4kv]

I still dont seem to understand

[@yycthomas09]

Yeah, cause you're slow

[@klaus8910]

@@yycthomas09bruh. Some people learn differently than others. Don’t bully the guy

[@talkingtomfriends3956]

You have a brain issues probably (same as me)

[@margaretnyagura1730]

😲 wow

[@Hopecooks-f2i]

It's wrong the answer is 213.52in because 68x3.14=213.520but as u said it was slightly different

[@sylbieuskana2225]

I have a quiz thnx

[@Localfork]

Third

[@Nathangamer-qk1ly]

my teacher show me to do l x w x h then divide by three

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i still cant get my grade up

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First

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Bro soo haft am in 10 grade sike😂

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Can you be my teacher T_T