Math, asked by shiwangikhanna, 1 year ago

the radius of a circular Garden is 70 m a 3.5 M Wide Road is built around its outside what will be the cost on the construction of the road if the rate of cost is rupees 20 per square metre.
Please answer me quickly

Answers

Answered by AbhayAgicha
11
I hope u know diagram

The outer radius of path, R= 70m
Width of park =3.5m
The inner radius of path , r =70-3.5 =66.5

Area of path = Area of outer circle - area of inner circle
= Pi R square -pi r square
= Pi×70×70-Pi×66.5×66.5
=1501.5

Price of road construction= 20/square meter
=1501.5×20
=30030.

Hope u understood
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