Q.2 Find the area of the following circles, given that (Take $$\pi =\frac{22}{7}$$)
(a) Given, r = 14 mm $$\therefore$$ Area of the circle =$$\pi r^2$$
= $$\pi × 14 × 14 = \frac{22}{7} × 14 × 14 = 616mm^2$$
(b) Given, r = 49 m $$\therefore$$Area of the circle =$$\pi r^2$$
= $$\pi × 49 × 49 = \frac{22}{7} × 49 × 49= 1886.5 m^2$$
(c) Given, r = 5 cm $$\therefore$$ Area of the circle =$$\pi r^2$$
= $$\pi × 5 × 5 = \frac{22}{7} × 5 × 5= 78.57 cm^2$$