Math, asked by sdkjack2278, 9 months ago

The outer circumference of a circular race-track is 525m. The track is everywhere 14m wide. Calculate the cost of leveling the track at the rate of 50paise per square meter(Use π=22/7)

Answers

Answered by aneeshgowdaag
0

Answer: 3293.2

Step-by-step explanation:

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Answered by topwriters
0

Cost of levelling the track = Rs. 3366.88

Step-by-step explanation:

The outer circumference of a circular race-track is 525m. The track is everywhere 14m wide.

Circumference of outer circle = 525m = 2πR

Radius = 525/2π = 83.52 m

Area of outer circle =  πR² = 22/7 * 83.52 * 83.52

 = 21923.28 m²

Radius of the inner circle = 83.52 - 14 = 69.52

Area of inner circle = 22/7 *69.52 * 69.52 = 15189.52 m²

Area of the track =  21923.28 - 15189.52 = 6733.76 m²

Cost of levelling the track = 6733.76 * 0.50 = Rs. 3366.88

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