Question

If the circumference of two circles are in the
ratio 3 : 1, then the ratio of their areas will be___? solve step by step

(2) 9:1
(4) 2:3
(1) 3:4
(3) 5:6​

Answer 1

Circumference of a circle =2πr

Ratio =3:1

Lets consider radius to be r

1

and r

2

r

2

=3r

1

Area =πr

2

Therefore ratio of areas =r

2

2

:r

1

2

=3

2

r

1

2

:r

1

2

=9:1