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Total cost=Rs 33,597
rate=Rs 56/m^3
find radius
total cost = volume of sphere*rate
Rs 33,597=v*Rs 56/m^3
v=Rs 33,597*m^3/Rs 56
4/3*22/7*r^3=33,597 m^3/56
r^3=3/4*7/22*33,597 m^3/56
r= \sqrt{3/4*1/22*33597m^2/56}
r=11.9653 m approx.
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