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12 January, 04:55

The perimeter of a semicircle is 72cm. what is the diameter

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  1. 12 January, 07:02
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    The diameter of the semicircle is 7 inch.

    Step-by-step explanation:

    So, diameter of the semicircle is 7 inch, whose radius is 7 inch. Therefore area of semicircle is 113.04 inch 2, whose diameter is 24 inch. So, circumference of semicircle is 21.98, whose radius is equal to 7 inch. So, arc length of a semi circle is 3.64 inch, whose radius is 7 inches and central angle is 60 degree.
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