Question

13. The cost of paving a circular plot at the rate of Rs20 per sq. m is Rs4435.20. Find the
cost of fencing the plot at the rate of Rs5 per metre.​

Answer 1

Step-by-step explanation:

20 × π r2 = 4435.20

20× 22/7 ×r2=4435.20

r2=4435.20×7/22×1/20

r=8.4

cost of fencing = 2×22/7×8.4 ×5=264

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