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27 March, 10:19

A semicircle has a diameter of 18 centimeters. what is its area? (use 3.14 for pi) a 1017.36 cm 2b 56.52 cm 2c 127.17cm 2d 113.04 cm 2

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  1. 27 March, 10:47
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    Area of semicircle = 1/2 x pi x r^2; where r = d/2 = 18/2 = 9cm.

    Area of semicircle = 1/2 x 3.14 x (9) ^2 = 1/2 x 3.14 x 81 = 127.17 cm^2
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