Question

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

plz, help I'm stuck.

Answer 1

178.3 mm²

Explanation:

Surface area = Base area + 3 x side triangles area

Sₐ = 43.3 + 3 x (1/2 x (10 x 9)) = 43.3 + (3 x 45) = 178.3

Answer 2

178.3

Explanation: