Question

A circular plot of land is chosen to construct a mall. The radius of the circular plot of land is 315 m. A certain portion of the land will be parking area and the remaining portion will constitute the mall. If a plan is drafted as shown in the figure and ð??œƒ = 85° then find the cost of fencing the parking area at a rate of Rs. 190 per metre.​

Answer 1

Answer:

Given : Radius (r) =21m

Radius (R) =24.5m

Required area =π(R

2

−r

2

)

Required area =π(24.5

2

−21

2

)=500.5

Cost =500.5×4

=2002Rs

Answer 2

Answer:

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