Question

The radius of a circular field is 24.5 m.Find distance run by a boy in making 4 complete rounds?​

Answer 1

Step-by-step explanation:

$circumference \: of \: field \\ = 2\pi \: r \\ = 2 \times \frac{22}{7} \times 24.5 \\ = 2 \times 22 \times 3.5 \\ = 44 \times 3.5 \\ = 154 \: m \\ total \: distance \: run \: by \: boy \\ = 4 \times 154 \\ = 616 \: m.$