Question

from a circular sheet of radius 4 cm a circle of radius 3 cm find the area of the remaining sheet​

Answer 1

Answer:

$= area \: of \: circular \: sheet = {\pi} {r }^{2} \\ = \pi \times 4 \times 4 = 16\pi {cm}^{2} \\ area \: of \: circle = 9\pi {cm}^{2} \\ area \: of \: the \: remaining \: sheet = 16\pi - 9\pi = 7\pi {cm}^{2}$