Question

If the radius of a circle is 3 times that of another circle find the ratio of their areas

Answer 1

Answer:

9/1

Step-by-step explanation:

Ratio of area = 9πr^2/πr^2

= 9/1

Answer 2

Answer:

(r)radius of greater circle = 3 (r')radius of anther circle

ratio of their areas =(r)²/(r')² = (3r')²/(r')³ = 9/1

required ratio is 9:1

hope this will help you