In the figure, radius of the circle is 7...

In the figure, radius of the circle is 7 cm and m(arc MBN) `=60^@`, find
(1) Area of the circle.
(2) A(O-MBN).
(3) A(O-MCN).

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The correct Answer is:

(1) Area of the circle `=154cm^(2)`,
(2) A(O-MBN) = `25.7cm^(2)` and
(3) A(O-MCN) `=128.3cm^(2)`.

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