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.

A B and C D are respectively arcs of two concentric circles of radii 21 cm and 7 cm and centre O . If /_A O B=30^@ , find the area of the shaded region.

A B and CD are respectively arcs of two concentric circles of radii 21cm and 7cm and centre O. If /_AOB=30o, 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.

Find the area of the shaded region in fig if radii of the two concentric circles with centre O are 7 cm and 14 cm respectively and lfloorAOC=40^(@) OR Find the area of the shaded region in fig. if ABCD is a square of side 14 cm and APD and BPC are semi circles.

AB and CD are respectively arcs of two concentric circles of radii 21cm and 7cm and centre O (see Fig.12.32). If /_AOB=30^(@) find the area of the shaded region.