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By Wiki Areas Mathematics Mcqs No Comments

A circular path of 13 m radius has marginal walk 2 m wide all round it. Find the cost of leveling the walk at 25p per m2?

A. Rs.45
B. Rs.78
C. Rs.44
D. Rs.40

π (15² – 13²) = 176

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176 * 1/4 = Rs.44

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