#### Question

In the given figure, the radius of the circle is 7 cm and m ( arc MBN) = 60

^{°},find A(O - MCN).

#### Solution

Radius of the circle, r = 7 cm

m(arc MBN) = ∠MON = θ = 60º

A(O-MCN) = Area of the sector OMCN

= Area of the circle − Area of the sector OMBN

= 154 − 25.7

= 128.3 cm^{2}

Taking Question image data : m(arcMBN) = 68°

A(O - MBN) = `(68/360) ` × area of circle

= 29.09 cm²

A(O - MCN) = area of circle - A(O - MBN)

=> A(O - MCN) = 154- 29.09 = 124.91 cm²

Is there an error in this question or solution?

Solution In the Given Figure, the Radius of the Circle is 7 Cm and M ( Arc Mbn) = 60°, Find A(O - Mcn). Concept: Perimeter and Area of a Circle.