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

$$\therefore 2 \pi r = 154$$
Or, $$2 × \frac{22}{7} × r = 154$$
Or, r = $$\frac{154×7}{2×22} = \frac{49}{2} m$$
$$\therefore$$ area of circle =$$\pi r^2 = \frac{22}{7} × \frac{49}{2}×\frac{49}{2}$$
= $$\frac{3773}{2} m^2 = 1886.5 m^2$$