Find the cost of fencing a well of radius 15.4 m at the rate of ₹ 90 per metre.
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see the picture it will help you out
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The cost of fencing the well is 8708 rupees.
Step-by-step explanation:
Given,
Radius of well, R = 15.4m
rate of cost = ₹90/m
A fence goes around the well, Which means the length we needed to fence is the perimeter of the well. Well is in the circular shape,
Circumference of well = 2πR
⇒ = 2×π×15.4
⇒ = 96.76m
Thus, Fencing is needed for 96.76m
Cost of fencing 1m = ₹90/m
Cost of fencing 96.76m = ₹90/m × 96.76 m
⇒ = ₹8708.4
⇒ = ₹8708
Hence, 8708 rupees is the cost of fencing the well.
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