Math, asked by reemadalal23, 4 months ago

The inner circumference of a circular track is 352 m and the width of the

track is 7m. Find the cost of putting up a boundary along the outer circle

of the track at the rate of 70 per meter.​

Answers

Answered by niyatiinn
2

Q- the inner circumference of a circular track is 220 m. the track is 7m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of rupee 2 per meter.

inner circumference = 220

2 π r = 220

r *2* 22 = 220 * 7

r = 35 m [ inner radius ]

inner radius , r₁ = 35 m

outer radius , r₂ = 35 + 7 = 42 m

outer circumference = 2 π r ₂

= 2 * ( 22 / 7 ) * 42 = 264 m

Cost of fencing = Rs 2 * 264 = Rs 528

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