Question

Will Medal. Finding the surface area of a square pyramid.
http://prntscr.com/adatni
I have gotten mixed answers on what the formula is for it, but I also know I need to some how do something with the slant height.
Thanks
~gottennis121

Answer 1

multiply all of the numbers

Answer 2

7x7 is 49

Answer 3

I'm not sure I trust that answer...

Answer 4

so...hmmm what's the area of THAT triangle there, the one to the left?

Answer 5

8.7 x 7 = 60.9. Then divide by 2, that equals 30.45

Answer 6

ok.. so 30.45
notice, the pyramid is really just 4 triangles and one square stacked up to each other at the edges
so 30.45 for one triangle, you have 4 of them
thus 30.45+ 30.45+ 30.45+ 30.45+ "the square " or 7x7

Answer 7

So I'd do, 30.45 x 4, + 7 x 7?

Answer 8

yeap

Answer 9

I got 170.8.

Answer 10

yeap

Answer 11

Thanks!

Answer 12

yw