Question

A square-based pyramid and its net are shown below. What is the surface

area of the pyramid (the area of its net)? Give your answer in cm².
3 cm
5 cm
Not to scale

Answer 1

39cm²

Explanation:

Surface area of square-based pyramid = length X width + 4(area of triangle)

= 3 X 3 + 4 (1.5 X 5)

= 9 + 4 (7.5)

= 9 + 30

= 39cm²