Question

The ratio between the areas of two circles is 16 : 9. Find the ratio between their
(ii) diameters
(1) radii
(iii) circumferences​

Answer 1

Answer:

Sorry, im weak in Mathematics

Answer 2

Answer:

let the radius of first circle be R

let the radius of second circle be r

ar.of first circle / ar.of second= 16/9

πR²/ πr² = 16/9

R²/r² = (4)² /(3)²

R/r = 4/3

the radius of first circle = 4

the radius of second circle = 3

ratio between radius of the circles = 4:3

diameter of first circle = 2R = 8

diameter of second circle = 2r = 6

ratio betweendiameter of the circles = 8:6

= 4:3

circumference of first circle = 2πR

= 2x 22/7 x 4

= 176/7

circumference of first circle = 2πR

= 2x 22/7 x 3

=132 /7

ratio between circumference

of the circles = 4:3