Perimeter of a semi circle
is 72cm, find its
diameter.
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as we all know that semi circle is a part of circle .
It is the half of the circle.
Explanation:
so, the perimeter of semi circle is 72cm.
therefore ,the perimeter of the circle is 72×2=144
perimeter of circle =2¤r ,where ¤ denoted pie
144cm=2×22/7×r
144×7/2×22=r
36×7/11=r
22.99=r
hence, d=45.98cm
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