Question

What is the area of a sector of a circle with circumference 22cm and angle 30

Answer 1

Step-by-step explanation:

22 is circumference so

2πr = 22

r = 7/2

now

area of sector with angle 30 degrees is

1/12 th of total area as 30/360 is 1/12th

now

πr^2 = 22x7x7/(7x4)

= 38.5 cm^2

1/12 th of area is 38.5 divided by 12 = 3.21 cm^2