what is the redius of sami circle if the circumference is 144 cm
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The perimeter of semicircle is 144 cm, which is equal to 2r + (pi)r, where r= radius. 2r + (pi)r = r(14+22)/7 = r(36/7) so r = 144*7/36 = 28 cm.
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The circumference of the circle is 2πr,
the circumference of semi circle = 2πr/2
= πr
so, acq
circumference of semicircle = 144 cm
πr = 144 cm
22/7 * r = 144
r = (144*7)/22
= 45.8 cm
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