Question

The radii of two circles are in the ratio 2:3. what are the ratio of their areas?​

Answer 1

Step-by-step explanation:

Let the radius of two circle be 2x and 3x respectively.

Now,

Circumference of a circle = 2πr

Circumference of first circle

= 2 × π × 2x

= 4 x π

Circumference of second circle

= 2 × π × 3x

= 6 x π

Ratio of Circumference of two circles ;

Hence, ratio of their Circumferences is 2 : 3.