A farmer buys a circular field at the rate of ₹ 700 per mp for ₹ 316800.Find the perimeter of the field.
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area of field = 316800/700 = 3168/7
since pi x r^2 = 3168/7,
r^2 = (3168/7)/7 = 3168/49
r = 8.040712731
perimeter = 2 x pi x r = 2 x pi x 8.040712731
perimeter = 50.52128809
since s.f. or d.p. is not specified i will assume as 3d.p.
thus 50.521
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