Question

Write the formulae for following:

1) Area of sector
2) Area between two concentric circles
3) Length between minor arc
4) Perimeter of semicircle
​

Answer 1

1) r² = a/2

2) π ((r2)² - (r1)²)

3) C = 2πr

4) A = πr²/2

HOPE IT'S HELPFUL TO YOU.

THANK YOU