Question

On a cirular cycle lane whose inner radius is 50 m and outer radius from s 71 m, soil preparation is to be done at the cost of ₹ 2 per m2 . Find the expenditure incurred.

Answer 1

given that in a radius is 50 M and Outer radius is 71 M so we first find the area

22/7×50×50=

Answer 2

The expenditure incurred is Rs.15972

Step-by-step explanation:

Inner radius of circular cycle lane r = 50 m

Outer radius of circular cycle lane R= 71 m

Area of cycle lane =$\pi R^2 - \pi r^2$

Area of cycle lane =$\frac{22}{7}(71^2-50^2)=7986 m^2$

Cost of soil preparation of 1 sq.m. = Rs.2

Cost of soil preparation of 7986 sq.m. = $7986 \times 2 = Rs.15972$

Hence the expenditure incurred is Rs.15972

#Learn more:

The inner circumference of a circular track is 264 m and the width of the track is 7 m. find :the radius of the inner track, the radius of the outer circumference, the length of the outer circumference, the cost of fencing the outer circumference at the rate of rupees 50 per m

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