Question

Use a formula to find the surface area of the prism. Round your answer to the nearest whole number.

Answer 1

surface area of prism = 650 cm²

Explanation:

surface area of the pentagonal prism is,

5ab + 5bh

according to the given prism,

a = 5 cm

b = 5 cm

h = 21 cm

= 5 * 5 * 5 + 5 * 5 * 21

= 125 + 525

= 650 cm²