Question

Please help!!!! No links please

Answer 1

I think its 900 square feet

Explanation:

SA formula for triangular prism

SA=p×H+2B

p is perimeter

h is height

B is area of the base (Base times height)

perimeter is 9+12+15 which is 36

height is 20

area of one of the base is 108

now plug it in and calculate

36×20+2(108)

this is 936

you round down to 900 obviously

and there you go