Question

The circumference of a semicircle is 123.2 cm what is radius

Answer 1

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Answer 2

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The Circumference of a semicircle is 123.2 cm

As we know the formula

Circumference of the semicircle = r (π +2)
$123.2 = r( \frac{22}{7} + 2) \\ 123.2 = r( \frac{22 + 14}{7} ) \\ 123.2 = r( \frac{36}{7} ) \\ r = \frac{123.2 \times 7}{36} \\ r = 23.95 \: cm$
So The radius is 23.95 cm

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