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13 March, 20:54

What is the difference in the areas of a circle with radius 14 ft and a circle wit radius 10 ft? round your answer to the nearest square meter. a) 75 ft^2 b) 160 ft^2 c) 302 ft^2 d) 537 ft^2

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  1. 13 March, 22:26
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    A = pi * r^2

    radius 14 ft

    A = 3.14 * 14^2

    A = 3.14 * 196

    A = 615.44 ... rounds to 615

    radius 10 ft

    A = 3.14 * 10^2

    A = 3.14 * 100

    A = 314

    difference is : 615 - 314 = 301 ... I guess it is C ... because of the rounding
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