Explain why you can use πr2 to find the area of the base of a cone

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asked Oct 27, 2019 171k views

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Ben Hughes · Answer 1 · 2019-11-01T17:27:05+0000

The base of a cone is a circle.

The area of a circle is
$\pi r^2$ .

Thus, the area of the base of a cone
$\pi r^2$ .

The derivation of the formula for the area of a circle involves a bit of calculus, but if you'd like, I can walk you through it.

Explain why you can use πr2 to find the area of the base of a cone

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