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The circumference of a circle is 8 cm. Find the area of the sector whose central angle is 72°. |
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Answer» Circumference of a circle = 8 cm Central angle = 72° Now, Circumference of a circle = 2πr 8 = 2πr r = 14/11 cm Area of sector = θ/360 x (πr2) = 72/360 x 22/7 x 14/11 x 14/11 = 1.02 cm2 |
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