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lesya [120]
3 years ago
5

The lateral area of a cone is 400 pi cm squared. The radius is 10 cm. Find the slant height to the nearest tenth.

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0

Answer:

Option A. 40\ cm

Step-by-step explanation:

we know that

The lateral area of a cone is equal to

LA=\pi rl

we have

LA=400\pi \ cm^{2}

r=10\ cm

substitute and solve for l (slant height)

400\pi=\pi (10)l

simplify

400=(10)l

l=400/10=40\ cm

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