In the given figure, two concentric circles with centre O have radii 21 cm and 42 cm. If Z AOB = 60°, find the area of the shaded region. [ Use t = 22 /1 6

In the given figure, two concentric circles with centre O have radii 21 cm and 42 cm. If /_AOB=60^(@) 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) )

In Fig., two concentric circles with centre O, have radi 21cm and 42cm. If angleAOB= 60^@, find 22 the area of the shaded region. ["Use "pi=(22)/(7)]

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 figure, OACB is a quadrant of a circle with centre O and radius 7 cm. If AD = 2 cm, find the area of the shaded region.

In the given figure OABC is a quadrant of a circle with centre O and radius 3.5cm .If OD=2cm ,find the area of the shaded region.

AB and CD are respectively arcs of two concentric circles of radii 21 cm and 7 cm and centre O. If ZAOB = 30^@ , find the area of the shaded region.

In the figure, OACB is a quadrant of a circle with centre O and radius 3.5cm . If OD=2cm , find the area of the shaded region. (usepi=(22)/(7))