In the shown figure, two circles of radii of 7 cm each, are shown. ABCD is rectangle and AD and BC are the radii. Find the area of the shaded region (in `cm^(2)`).

Two concentric circles of radii 3.5 cm and 7cm form a sector as shown in the figure. Find the area of the shaded region.

In the given figure, ABCD is a square of side 7 cm. DPBA and DQBC are quardrants of circles each of the radius 7 cm. Find the area of the shaded region.

In the given figure, ABCD is a square of side 7 cm. DPBA and DQBC are quardrants of circles each of the radius 7 cm. Find the area of the shaded region.

In the figure, the radii of two concentric circles with centre O are 7 cm and 14 cm and angle AOC = 60^(@) . Find the area of the shaded region.

In the given figure, ABCD is a square of side 7cm, DPBA and DQBC are quadrants of circles each of the radius 7 cm. Find the area of shaded region.

In the give figure, the sectors of two concentric circles of radii 7 cm and 3.5 cm are shown. Find the area of the shaded region.

In the given figure, two concentric circles with centre O, have radii 21 cm and 42 cm. If angleAOB = 60^(@) , Find the ara of the shaded region

In the adjoining figure, two concentric circle with centre O have radii 21 cm and 42 cm. If angleAOB = 60^(@) , find the area of the shaded region. (Use pi = (22)/(7) )