Question

A pyramid has a height of 17 in. and a surface area of 30 in^2. Find the surface area of another pyramid with a height of 13 in.

Answer 1

Medal will be given to whoever has right answer!

Answer 2

180

Answer 3

Thank you! How did you get that?

Answer 4

Well, the faces of the pyramid are triangles. The area of a triangle is 1/2 bh. If the height is doubled, the area will be doubled.

Answer 5

Thank you!

Answer 6

yw

Answer 7

I think it is 180, @jim_thompson5910

Answer 8

if each dimension is doubled, then the area is quadrupled

Answer 9

so the new area will be 4 times the original area

Answer 10

Okay cool! So the answer is 180!

Answer 11

no

Answer 12

what! So it has to be 360, then

Answer 13

the original surface area is 90

the new surface area is 4 times that

Answer 14

yeah 360

Answer 15

okay good. Thank you!

Answer 16

Sorry I cannot give you a medal! I already gave it to you.

Answer 17

its fine

Answer 18

**I meant someone else! Sorry!

Answer 19

I gave him one because he is right and I was wrong. I overlooked the similar to part.
Thanks jim.

Answer 20

yw