the diameter of a circular park is 87 m .on its outside there a 3.5 metre wide road find the cost of constructing the rode at ₹240 per m sgure
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0
Step-by-step explanation:
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Answered by
3
Answer:
Diameter =84 m, Radius =42 m
Outer radius =42+3.5 m =45.5 m
Outer area from center = πR
2
=3.14×(45.5)
2
=6500.58m
2
Inner area = πr
2
=3.14×42×42
=5538.96m
2
Area of round = (6500.58−5538.96)m
2
=961.62m
2
Cost of construction = Rs. 2.40perm
2
∴ cost of construction = Rs. 2.40×961.62
=Rs.2307.88.
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