Given, radius \\\\(r = 21 \\,cm\\\\) and \\\\(\\pi = \\dfrac{22}{7}\\\\)Then,Area of the circle = \\\\(\\pi r^2\\\\) sq units\\\\(= \\dfrac{22}{7} \ imes 21 \ imes 21\\\\)\\\\(= 22 \ imes 3 \ imes 21\\\\)\\\\(= 1386 \\,cm^2\\\\)