the area of a circular pond is 1386 find the length of wire required to fence around it with one round
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Step-by-step explanation:
Area of a circle of radius r =πr
2
=1386cm
2
7
22
×r
2
=1386cm
2
r
2
=441cm
2
r=21cm
Circumference of a circle of radius r =2πr
Circumference of circle of radius 21cm=2×
7
22
×21=132cm
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