`AD and BC` are the arcs of concentric circles with O as their common centre. If `OA = AB`. then the area of the figure ABCD is

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.

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

AB and CD are respectively arcs of two concentric circles of radii 21 cm and 7 cm . With centre O (See figure ). If angleAOB=30^(@) ,find the area of the shaded region . (use pi=(22)/(7) )

In Figure,l is a line intersecting the two concentric circles,whose common centre is O, at the points A,B,C and D. Show that AB=CD

In Figure,l is a line intersecting the two concentric circles,whose common centre is O, at the points A,B,C and D. Show that AB=CD

AB and CD are respectively arcs to two concentric circles of radii 21cm and 7cm with centre O ( See figure), If /_AOB=30^(@) , find the area of the shaded region. (usepi=(22)/(7))

AB and CD are respectively arcs to two concentric circles of radii 21cm and 7cm with centre O ( See figure), If /_AOB=30^(@) , find the area of the shaded region. (usepi=(22)/(7))

In the figure, AB is a diameter of the circle with centre O and OA = 7cm. Find the area of the shaded region

In the given figure o is the centre of the two concentric circles. A line T cuts the circles at A, B, C and D as shown in the figure. OP is perpendicular to AD. Given OA = 34 cm, OP = 16 cm and AB = 18 cm Find : length of chord BC

In the given figure o is the centre of the two concentric circles. A line T cuts the circles at A, B, C and D as shown in the figure. OP is perpendicular to AD. Given OA = 34 cm, OP = 16 cm and AB = 18 cm Find : length of chord AD