Question

The area of two circles are in the ratio 4:9. The ratio of their circumference is _​

Answer 1

Answer:

4:9

Step-by-step explanation:

=4:9(given). Radii and ratio of radii is 4:9 so ratio of their circumference will also be 4:9.

Answer 2

Answer:

2:3

Step-by-step explanation:

let the radii of the two circles be r and R

ratio= 22/7*r²/22/7*R²=4/9

r²/R²= 4/9

r/R=2/3

therefore r can be written as 2x and R as 3x

now,

ratio of circumference=2π*2x/2π*3x

=2/3

2:3