12. The radius of a circular ground is 63 m.
Find the cost of putting
a fence around the ground at the rate of 50 rs per metre. also fint the cost of leveling the ground at the rate of 40rs per square metre
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Step-by-step explanation:
Radius = 63 m
Circumference of ground= 2πr
= 2*22/7*63= 396 m
Cost of fencing= 396*₹50
= ₹19800
Area of ground= πr²
= 22/7*63²
= 22/7*63*63= 12474 m²
Cost of levelling the ground= 12474*40
= ₹498960
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