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

Question

asked Apr 25, 2021 114k views

2 Answers

Tom Lowbridge · Answer 1 · 2021-04-28T02:58:49+0000

Answer:

13 : 11

Explanation:

If the ratio of radii = a : b, then

ratio of areas = a² : b²

Given

ratio of areas = 169 : 121, then

ratio of radii =
√(169) :
√(121) = 13 : 11