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.

In figure, a square of diagonal 8 cm is inscribed in a circle. 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.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)

Two circles touch each other externally. The sum of their areas is 58pi cm^(2) and the distance between their centres is 10 cm. Find the radii of the two circles.

In the given figure, PQ = 24 cm PR = 7 cm and O is the centre of the circle. Find the area of the shaded region. (Use pi = 3.14 )

In the given figure, O is the centre of the bigger circle and AC is its diameter. Another circle with AB as diameter is drawn. If AC = 54 cm and BC = 10 cm. Find the area of the shaded region

The area of a ring is 528cm^(2) and the radius of the outer circle is 17 cm . Find : (i) the radius of the smaller circle . (ii) the width of the ring.

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

The diameter of two circles are 32 cm and 24 cm. Find the radius of the circle having its area equal to sum of the areas of the two given circle.

Two circles touch externally. The sum of their areas is 130pi sq. cm and the distance between their centres is 14 cm. Find the radii of the two circles.

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