Find the surface area of a cone if the diameter of its base is 13.5 feet, and it has a slant height of 16.8 feet. Round to the n

Question

3 years ago

13

earest tenth.
A)928.7 ft2
B)572.6 ft2
C)499.2 ft2
D)356.1 ft2

1 answer:

Tresset [83] · Answer 1 · 2022-03-25T06:41:40+03:00

5 0

The diameter is given which is 13.5feet and radius is half of diameter. Therefore radius = 6.75 feet.

Slant height = 16.8 feet

The formula of surface area of cone is

$S = \pi *r(r+l) \\ S = \pi*6.75(6.75+16.8) \\ S =\pi*6.75*23.55 = 499.2 ft^2$

Correct option is C