The radius of the circle given above is 7 cm and the angle subtended by the arc is 60∘. If the area of △OAB is 21cm2, then the area of segment APBA is
4.7 cm2
Area of sector OAPB=60360×πr2=60360×227×72=25.7 cm2Area of segment APB = Area of sector OAPB - Area of triangle OAB=25.7−21=4.7 cm2
Therefore, area of segment APB=4.7 cm2