Question

A cone has a base that is a shape of a circle. The length across is 16 feet. The height is 8 feet and the slant height is 10 feet. What is the lateral area of the cone using 3 for pi

Answer 1

The answer to your question is Surface area = 432 ft²

Explanation:

Data

diameter = 16 ft

height = 8 ft

slant height = 10 ft

pi = 3

Process

1.- Write the formula to calculate the surface area

Surface area = pi x radius x slant height + pi x radius²

2.- Substitution

Surface area = (3 x 16/2 x 10) + (3 x (16/2)²)

-Simplification

Surface area = 240 + 192

-Result

Surface area = 432 ft²