Question

Find the cost of fencing a circular field of radius 560 m at Rs 3.25 per m

Answer 1

Circumference = $2\pi r$

2 × 22/7 × 560 = 3520m

Cost required = 3520 × 3.25 = ₹11,440

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Answer 2

Given radius of circular field is 560 m

Rate of 1 m fencing is 3.25 per m

Perimeter of circular field is

$\pi \: \: r {?}^{2}$

=22×560 ×560 /7

=985600m^2

Cost of fencing is 985600 ×3.25

=3203200Rs

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