Question

Find the area of the segment AOB of angle 120°and radius 18 cm.

Answer 1

Step-by-step explanation:

Given:

Radius(r)=18cm

and angle=120

Therefore,

120/360*22/7*(21)^2

=1/3*22/7*21*21

=22*21

=462cm^2

Finding area of AOB

=1/2*b*h

angle OMB=angle OMA = 90 degree.

therefore OA=OB

OM=OM

Therefore OMA = OMB

=angle AOM=angle BOM