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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).

Text Solution

Verified by Experts

The radius of the circle (r ) = 7 cm
m(arc MBN)`= theta= 60^@`
(1) Area of the circle `= pir^2`
`=22/7xx7xx7`
`= 154 cm^2` …(1)
(2) A(O-MBN)`=theta/360xxpir^2`
`60/360xx154` …[From(1)]
`=154/6`
`=25.666`
`~~25.7 cm^2`
(3) A(O-MCN)= Area of the circle - A(O-MBN)
`=154-25.7`
`=128.3 cm^2`
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