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Question

Find the area of the following circles, given that:

(a) radius = 14 mm (Takeπ) (b) diameter = 49 m

(c) radius = 5 cm

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Solution

(a) r = 14 mm

Area = πr2 = 616 mm2

(b) d = 49 m

r =

Area = πr2 == 1886.5 m2

(c) r = 5 cm

Area = πr2 = = 78.57 cm2


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