Question

the ratio between the areas of 2 circles are 16:9. Find the ratio between their: i) radii, ii) diameter and iii) circumferences​

Answer 1

Answer:

Step-by-step explanation:

Given

ratio of areas of 2 circles=16:9

(i)ratio of radii

$\pi$R²:$\pi$r²=16:9

=>R²:r²=16:9

=>(R/r)²=(4/3)²

=>R/r=4/3

=>R:r=4:3

(ii)ratio of diameter

R:r=4:3

D:d=2R:2r=R:r

=>D:d=4:3

(iii)ratio of circumstances

2$\pi$R:2$\pi$r=R;r

C:c=4:3