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10 January, 22:13

What happens to the area of the circle when it's radius is doubled?

12.57:3.14

radius = 4cm

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  1. 10 January, 22:40
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    Area of circle = pi x radius squared where pi = 3.1416 radius = diameter/2 = 4/2 = 2 ins Area = 3.1416 x 2 x 2 sq. ins. = 12.5664 sq in.
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