Question

there are two concentric circles as shown in the following figure. the circumference of outer circle is 132 cm and circumference of the inner circle is 88 cm. find the difference between their radii i.e., ( R - r) .​

Answer 1

Step-by-step explanation:

he difference between the outer circle and the inner circle (R-r) = 7 cm.

The circumference of outer circle is given as 132 cm.

Finding the radius of the outer circle,

2πR = 132

R = 21 cm

Now circumference of inner circle is given as 88 cm.

Finding the radius of inner circle,

2πr = 88

r = 14 cm

Now we have to find the difference between the radii

(R-r) = (21-14) = 7 cm

Answer 2

Answer:

7cm

Step-by-step explanation:

21-14

difference Between two radii =21-14

=7cm