In Figure, a crescent is formed by two circles which touch at A. C is the centre of the larger circle. The width of the crescent at BD is 9cm and at EF it is 5cm. Find (i) the radii of two circles (ii) the area of the shaded region.

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm.Find: (a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between two circles ( π=3.14)

The circles which are not congruent touch externally. The sum of their areas is 130 pi cm^2 and distance between their centres is 14 cm. Find the radii of the two circles.

In the figure, O is the centre of the circle. anglePOQ=90^@ . The area of the shaded region is 126cm^2 . Find the radius of the circle.

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.

Two circles touch internally. The sum of their areas is 125 pi cm^2 and distance between their centres is 5 cm. Find the radii of the circles.

Two circles touch internally. The sum of their areas is 116 pi cm^(2) and distance between their centres is 6 cm. Find the radii of the circles

Two circles touch internally. The sum of their areas is 116 pi cm^2 and distance between their centres is 6 cm. Find the radii of the circles.

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.

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm(a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between the two circles. ( pi = 3.14)