isabelvaldez123
12.01.2020 •
Mathematics
Acircle has a circumference of 42 in.what is the area of the circle
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Ответ:
140.37 in²
Step-by-step explanation:
C = 2πr
42 = 2πr
21 = πr
r = 21/π
A = πr²
A = π × (21/π)²
≈ 140.37 in²
Ответ: