find the cost of fensing in a circular field of area 9856 m square at the rate of rupees 20 per metre
I hv answered here because no opt came ..
So... i did that
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Answer:
Step-by-step explanation:
Area of a circle = πr^2
9856= 22 × r^2
7
9856×7= r^2
22
3136= r^2
r=√3136
r = 56
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the cost of fencing in circular field is Rs 7040
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9856m^2= 22/7×r^2
9856m^2×7/22=r^2
896m^2×7/2=r^2
448m^2×7= r^2
3136m^2=r^2
\sqrt{3136 {m}^{2} } = radius
56m=radius
circuference = 2\pi \: r
C=2× 22/7×56m
C=44×8m
C=352m
Cost of fencing it= 352×Rs 20=Rs 7040
Hope it helps
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