1.

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

Answer»

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



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