Question

PQ is chord of circle with centre O . If m angle POQ =90° and area of shaded region is 114 sq. cm. then find the radius of circle

Answer 1

Area = 90/360 X 22/7 X r^2

114 = 1/4 X 22/7 X r^2

r^2 = (114 X 7 X 4)/22

r = sq. root of 145.09 = 12.04