Question

pleas answer this question​

Answer 1

Answer:

4:5

Step-by-step explanation:

area 1 / area 2 = 16/25

=> πr^2/πR^2 = 16/25

=> r^2/R^2 = 16/25

=> r/R = √16/√25

=> r/R = 4/5

=> r:R = 4:5