Q.3 If the circumference of a circular sheet is 154 m, find its radius. Also find the area of the sheet. (Take \(\pi =\frac{22}{7} \))

Given: Circumference = 154 m

\(\therefore 2 \pi r = 154 \)

Or, \( 2 × \frac{22}{7} × r = 154 \)

Or, r = \(\frac{154×7}{2×22} = \frac{49}{2} m \)

\(\therefore \) area of circle =\( \pi r^2 = \frac{22}{7} × \frac{49}{2}×\frac{49}{2} \)

= \(\frac{3773}{2} m^2 = 1886.5 m^2 \)