Question

The surface area of a cone is about 64 square meters. The radius of base is 2 meters. What is the slant height?

Answer 1

Explanation:

L is the slant height

area of base = 4π m²

lateral area = surface area - base area = 64-4π

πrL = 64-4π

L = (64-4π)/(2π) = 8.2 m