A wire is in the shape of square which side is 16.5cm which is in the shape of circle.Find the circumference and diameter of circle
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perimeter of square=perimeter of circle
4×side=2πr
4×16.5=2×22/7×r
66.0=44/7×r
66×7/44=r
3×7/2=r
21/2 =r
10.5=r
circumference of circle=2πr
=2×22/7×r
=44/7×10.5
=44×1.5
=66
diameter of circle =2r
=2×10.5
=21
4×side=2πr
4×16.5=2×22/7×r
66.0=44/7×r
66×7/44=r
3×7/2=r
21/2 =r
10.5=r
circumference of circle=2πr
=2×22/7×r
=44/7×10.5
=44×1.5
=66
diameter of circle =2r
=2×10.5
=21
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