Question

What is the volume of a square pyramid with base edges of 18 cm and a slant height of 15 cm?

Answer 1

1296 cm³

Explanation:

V = a² x [√s²- (a/2)²] / 3

a = 18 cm

s = 15 cm

V = 18² x [√15²-(18/2)²] / 3 = 18² x [√225-81] / 3

V = 324 x (√144/3) = 1296 cm³

Answer 2

the volume of the square pyramid is 2430 cubic cm