the diameter of a circular park is 84m. a 3.5m wide road runs on the outside around it.find the cost of constructing road at ₹200per square metres
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Step-by-step explanation:
Diameter =84m, radius =42m
Outer radius =42+3.5m=45.5m
Outer area from center =πr^2
=3.14x(45.5)^2
=6500.58m^2
Inner area =3.14x42x42
=5538.96m^2
Area of round =(6500.58-5538.96)m2=961.62m2
Cost of construction=200x961.62
=192,324Rs.
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