Question

If any figure, two circles with the same centre are shown. The radius of the outer circle is 12 cm, whereas the radius of the inner circle is 8 cm. Find:

(i) The area of the outer circle (ii) The area of the inner circle (iii) The area between both circles​

Answer 1

Step-by-step explanation:

1) Area of outer circle =

$\pi \times r^{2}$

where r is the radius of outer circle

= 3.14 x (12)² = 452.16 cm²

2) Area of inner circle =

$\pi \times r ^{2}$

Where r is the radius of inner circle

= 3.14 x (8)² = 200.96 cm²

3) Area between both circles = Area of outer circle - Area of inner circle

= 452.16 - 200.96 cm²

= 251.20 cm²