Question

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

Answer 1

Answer:

• Area of circle is: 784 cm²

• Radius of the circle is: 15.8cm

Step-by-step explanation:

• given=90

• area =196

• use formula

• 196=1/4*22/7*r²

• r²=196*4*7/22

• r²=249.4545

• r=under root 249.4545