The perimeter of a circle is 58cm.Find the area if its diameter is9cm
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Radius = Diameter/2 = 9/2 = 4.5 cm
Area = πr² = 3.14 * 4.5 * 4.5 = 63.585 cm²
Area = πr² = 3.14 * 4.5 * 4.5 = 63.585 cm²
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Area of a circle of circle = πr²
Diameter of a circle(d) = 2 (radius) = 2r =9 cm
r = 9/2 = 4.5 cm
Area = π(4.5)² = 3.14×20.25 = 63.6850 cm²
Note: - Here the perimeter of the circle will be 2πr = 2×3.14×4.5 = 28.26 cm,
Diameter of a circle(d) = 2 (radius) = 2r =9 cm
r = 9/2 = 4.5 cm
Area = π(4.5)² = 3.14×20.25 = 63.6850 cm²
Note: - Here the perimeter of the circle will be 2πr = 2×3.14×4.5 = 28.26 cm,
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