Question

What is the surface area of the pyramid to the nearest whole number?

25 cm2
30 cm2
85 cm2
60 cm2

Answer 1

so what is the area of the base ?
what is the area of each side ?

Answer 2

Are all the triangular faces are equal?

Answer 3

If so then
Total surface area
= area of base + area of four triangle faces
= length * width + 4( 1/2 * base *height)
=(5*5) + 4(1/2*5*6)
= 85 cm2