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Katena32 [7]
3 years ago
8

Find the lateral and surface area of each cone

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Answer:

\large\boxed{L.A.=153\pi\ mm^2}\\\boxed{S.A.234\pi\ mm^2}

Step-by-step explanation:

The formula of a lateral area of a cone:

L.A.=\pi rl

r - radius

l - slant height

The formula of a surface area of a cone:

S.A.=\pi r^2+\pi rl

We have r= 9mm and l = 17mm. Substitute:

L.A.=\pi(9)(17)=153\pi\ mm^2

S.A.=\pi(9^2)+153\pi=81\pi+153\pi=234\pi\ mm^2

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Step-by-step explanation:

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4 0
1 year ago
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Step-by-step explanation:

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