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Find the area of the following circles, given that [Use π = 22/7] (a) radius = 14 mm (b) diameter = 49 m (c) radius 5 cm |
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Answer» (a) Area of circle = π r 2 = 22 /7x14 x14 = 22 x 2 x 14 = 616 mm2 (b) Diameter = 49 m \ radius = 49/2 = 24.5 m \ Area of circle = π r 2 = 22/7 x 24.5 x 24.5 = 22 x 3.5 x 24.5 = 1886.5 m2 (c) Area of circle = π r 2 = 22/7 x 5 x 5 = 550/7 cm2 |
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