If the length of the cushion measures 13 in, the width measures 8 in, and the height measures 3 in, how much fabric does Greg need to cover the cushion?

1 answer

To calculate the amount of fabric needed to cover the cushion, we need to find the surface area of the cushion.

Surface area = 2(length x width) + 2(length x height) + 2(width x height)

Plugging in the given measurements, we get:

Surface area = 2(13 x 8) + 2(13 x 3) + 2(8 x 3)
Surface area = 208 + 78 + 48
Surface area = 334 square inches

Therefore, Greg will need 334 square inches of fabric to cover the cushion.