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If the perimeter of a semi-circle is 144 cm, then find its radius (in cm).1). 562). 293). 284). 58 |
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Answer» Perimeter of semi-circle = R(π + 2) ⇒ 144 = r(22/7 + 2) ⇒ 144 = 36/7 × r ⇒ r = 4 × 7 = 28 cm |
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