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attashe74 [19]
3 years ago
12

The circumference of the base of a cone is 24 inches. The slant height of the cone is 20 inches. What is the surface area of the

cone? Express the answer in terms of .
Mathematics
1 answer:
nignag [31]3 years ago
7 0

Answer:

Step-by-step explanation:

Given data:

Circumference of the base of the cone = 24in.

Recall that circumference (in this case) is the distance round the base of the cone and from here the diameter D=12in. Radius = 6in

Surface area l = pie x radius ( slant height + radius)

= 3.142 x 6 (20 + 6)

= 3.142 x 6 (26)

= 3.142 x 156

= 490.152in^2

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