The circumference is 18 cm. Find the area of the circle bounded by this circle.
| January 5, 2021 | education
The formula for the circumference: L = 2ПR, where R is the radius of the circle.
The formula for the area of a circle: S = ПR ^ 2
L = 18cm
Hence, 18 = 2ПR
18 = 2 * 3 * R
R = 3 (cm)
Hence, S = 3 * 3 ^ 2 = 3 * 9 = 27 cm ^ 2
Answer: 27 cm ^ 2
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