Maya uses clay to make an earring in the shape of a
square pyramid. She plans to cover the earring with
glitter. What is the area Maya will cover with glitter?
Use a net to help you find the surface area of the pyramid.
The pyramid has five faces: one square base and
four identical triangles.
Find the sum of the areas of the faces.
18.18+4) (18.14) = 324 + 2(18.14)
= 324 + 2(252)
= 324 + 504
= 828

Ayana wrote the expression below. Does this expression represent the surface
area of Maya's earring in the Example? Explain.
2(18.18) + 2)(18.14) + 2(2)(18.14)