The perimeter of semi circle protector is 108 cm. Find the diameter of the protector
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2^r/2=108
2×22/7×r/2= 108
r= 108×7/22
= 34.3
d=34.3×2=68.6
2×22/7×r/2= 108
r= 108×7/22
= 34.3
d=34.3×2=68.6
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