the area of the circular is 30.86 hectares.Find the cost of fencing if at tge rate 60 paise per meter
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Area of the circle = 1386 hectares
= 13.86×100×100m2
(∵1 hectare−10000m2)
= 1386×100m2
Let r be the radius of the circle. Then
227r2=1386×100
=> r2=1386×100×722
= 63×100×7
=> r=3×7×10=210m
Circumference of the circle = 2πr
= 2×227×210
= 44×30metres
Therefore, Cost of fencing at the rate of 60 paise per metre
= 44×30×60100 = Rs.792
= 13.86×100×100m2
(∵1 hectare−10000m2)
= 1386×100m2
Let r be the radius of the circle. Then
227r2=1386×100
=> r2=1386×100×722
= 63×100×7
=> r=3×7×10=210m
Circumference of the circle = 2πr
= 2×227×210
= 44×30metres
Therefore, Cost of fencing at the rate of 60 paise per metre
= 44×30×60100 = Rs.792
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