Question

i) The radius of a circular field is 210 m. The cost of fencing its circumference at the rate of Rs 1.25 per metre is​

Answer 1

Answer:

Radius of field=210m

Circumference of circle=2πr=2×22/7×210=2×22×30=1320m

Cost of fencing=Circumference×rate=1320×1.25=Rs.1650

Answer 2

radius =210m

circumference of a circular field = 2πr

=2 x 22/7 x 210/7

=2 x 22 x 30

= 1320m

therefore,cost of fencing=1320 x 1.25

=1650 rupees

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