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The 원둘레 of a circle is 10𝜋 feet. What is the area?

해법

The circumference of a circle is 10𝜋 feet. What is the area?

해법

a re a : 25 π f t^{2}

+1

십진법

78.53981 \dots

솔루션 단계

Given:

c i rc u m f ere n ce : 10 π f t

주어진 원 반지름

C i rc u m f ere n ce = 10 π : r = 5

주어진 원 영역

r = 5 : A = 25 π

a re a : 25 π f t^{2}

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