Question

What is the radius of circle if the angle of sector is 90degree and the area of the circle is 196cm2

Answer 1

Area of circle is 784 cm²

Hence radius of circle is 15.8cm

Answer 2

Answer:

area of sector =theta /360 pie R²

Step-by-step explanation:

here is given that theta=90

and area =196

by using formula

196=1/4*22/7*r²

r²=196*4*7/22

r²=249.4545

r=under root 249.4545