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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[@MathwithMrJ]

Great to hear that! Glad these are helpful.

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This is college math?

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[@MathwithMrJ]

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

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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

[@dorasdad8480]

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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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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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[@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

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❤thanks from ff community member for supporting us

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He makes me feel more comfortable to not pay attention in class because i can always come back to his vids to catch up quickly

[@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

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[@yolandawilliamson4450]

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

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Thank you Mr. Jay! You help me with my math so much!

[@OptimusPrime2024-s1b]

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

[@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.

[@alexamakesss]

bro u teach better than my teacher rn

[@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.

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BE MY TEACHER NOW

[@_its.stephanie.rose_]

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

[@jararabbas6490]

how to find the area of a cylinder please tell

[@isaiahwarfield9389]

Mr j saved me when my math teacher couldnt..

[@urfavbrunette1011]

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?

[@margaretnyagura1730]

😲 wow

[@pianocat2.017]

Excuse but where did you get 15 from?

[@Hopecooks-f2i]

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

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I would switch teachers not for a million bucks but for free😂

[@sylbieuskana2225]

I have a quiz thnx

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[@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)

[@RamJacobSlays]

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

[@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

[@PrincessAlejiahCabeloza]

Ughmm.. Im confused again

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Why

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First

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