Question

What is the radius of the circle if the angle of sector is 90degree and the area of the circle is 196²? With solution

Answer 1

Answer:

πr^2=196

r^2=196×7/22=98×7/11=686/11

r=7√(14/11)

Area of sector of angle 90 degree=(1/4)×area of circle =(1/4)×196=49 Ans