Question

Area of sector of central angle 200 degree of a circle is 770cm. Find the length of the corresponding arc of this sector​

Answer 1

Answer:

therefore

πr²200/360=770

r²=770*360/200π

r²=77*18*7/22

r²=7*9*7

r=√7*7*3*3

r=7*3

r=21cm

therefore the length of the arc is

=2πr200/360

=22*21*10/9*7

=220/3

=73.34cm

thank you