Question

Use the net to find the surface area of the regular pyramid.

Answer 1

D

Explanation:

Base perimeter = side x 5 = 8 x 5 = 40 cm

LA = (base perimeter x slant height)/2 = (40 x 9)/2 = 180 cm^2

SA = base area + lateral area = 110.1 + 180 = 290.1 cm^2