How would I find the surface area of the cone in terms of pi? It has a radius of 7 cm and a slant height of 19 cm.

asked Sep 11, 2017 196k views

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1 vote

L.S.A = pi (7) (19) similar to 133*pi
3.14 * 133 similar to 417.62
similar to 417.62cm^2

Zulema answered Sep 12, 2017

9.2k points

3 votes

The formula is SA =
$\pi r^(2) + \pi rl$ . r is the radius and l is the slant height. In your case it would be
$49\pi + 133\pi = 172\pi$ .

Tolio answered Sep 16, 2017

by Tolio

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