Question

The areas of two circles are in a ratio of 169:121. What is the ratio of their radii?

Answer 1

Answer:

$1 \frac{48}{121}$

Step-by-step explanation:

divide 169/121 and that equals the answer above

Answer 2

Answer:

13 : 11

Step-by-step explanation:

If the ratio of radii = a : b, then

ratio of areas = a² : b²

Given

ratio of areas = 169 : 121, then

ratio of radii = $\sqrt{169}$ : $\sqrt{121}$ = 13 : 11