(c) 28 cm (a) 7 cm (b) 1.4 mm 22 3. Find the area of the following circles. Take a (a) Radius = 21 mm (b) Diameter = 42 m 7 (c) Radius 14 cm
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Area of a circle=πr^2
(a) Radius=14cm
Area=π(14)^2
=22/ 7(14)(14)
Area=616mm^2
(b) Radius=5cm
Area=π(5)^2
= 22/7(25)=78.5cm^2
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