The diameter of a circular park is 28 m. A roads 1.75 m wide runs arounds it. Find the cost gravelling the road at ₹ 5 per m²
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Step-by-step explanation:
Radius of outer circle = 28m
Radius of inner circle = 28 - 1.75 = 26.25
Area of outer circle = 22/7×28×28 = 2462sq. m
Area of inner circle = 22/7×26.25×26.25 = 2165.62 sq. m
Area of path = Area of outer circle - Area of inner circle
= 2464 - 2165.65 = 298.37sq. m
Rate of gravelling = Rs. 5/sq. m
Total amount = 298.37 × 5 = Rs. 10154.37
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