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The circumference of a circle: C = 2(pi)r
The area of a circle: A = (pi) r^2
C = 25.12 cm
2(pi)r = 25.12 cm
r = 25.12/[2(pi)]
r = 12.56/pi
r^2 = 157.7536/pi^2 So,
A = (pi)r^2
A = (pi)(157.7536/pi^2)
A = 157.7536/pi
A = 50.22 cm^2 (approximately)
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∙ 15y ago
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