The area of a circle is 1386 cm2. What is the radius of the circle? [Use π = $\frac{22}{7}$]

21 cm 7 cm 14 cm 18 cm

21 cm

We know that, Area of a circle = πr2 Given, Area of the circle = 1386 cm 2  πr2 = 1386 = \(\frac{22}{7}\)× r2 = 1386 = r2 = 1386 × \(\frac{7}{22}\) = r2= 63 × 7 = r = \(\sqrt {441}\) = 21 cm