A B and CD are respectively arcs of two ...

A B and CD are respectively arcs of two concentric circles of radii 21 CM and 7cm which center O(see figure).If`/_=30^@` find the area of the shaded region. ( use`pi=22/7`)

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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) )

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VGS PUBLICATION-BRILLIANT-TANGENTS AND SECANTS TO A CIRCLE-EXERCISE

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