HOLA, BRAINLIAN
The cost of fencing a circular field at the rate of Rs. 24 per metre is Rs. 5280. The field is to be ploughed at the rate of Rs. 0.50 per m2. Find the cost of ploughing the field (Take π = 22/7).
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For Rs.24, then length of fencing =1m
For Rs.52 so, the length of fencing
=1/24×5280=220meters
Circumference of the field =220m
2pr=220
Therefore,
r=220×7/44=35m
Area of the field =πr²
π(35)²=1225
Cost of ploughing =Rs.0.50 per m²
Total cost of ploughing the field =Rs.1225
= 7×21225×22×1
=Rs,1925.
Hence, the answer is 1925.
- I Hope it's Helpful Ayan.
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