Question

Find the area of a circular ring whose inner and outer radii are 10 cm and 11 cm respective.​

Answer 1

Answer:

s taught tutcjfngibkbk

Answer 2

Answer:

66cm²

Step-by-step explanation:

Always remember,

Area of a circular ring = π(R²-r²)

where R = Outer Radius

& r = Inner Radius

We also know that A²-B² = (A+B) x (A-B)

So, the area equation will be:

= π x (11+10) x (11-10)

= π x 21 x 1

= 22/7 x 21

= 22 x 3

= 66 cm²