since 120° is 1/3 of a circle, it will have 1/3 the area, or
1/3 * πr^2
and since the arc length is 1/3 the circumference of the circle, the perimeter is 2r + 1/3 (2πr)
a sector of a circle of radius 8cm has an angle of 120 degrees at the centre find its perimeter and its area take pie as 3.142
4 answers
What's the answer really I don't understand please the piece but thanks by the way 😊
Can you please give a clear solving
Can you give a clear solving
1 answer