The angle of a sector of a circle is 0.9 radians. If the radius of the circle is 4cm, find the length of the arc of the sector.
-
3.6 cm
- 7.6 cm
- 8.0 cm
- 11.6 cm
The correct answer is: A
Explanation
Length of arc given angle in radians = \(r \theta\)
= \(4 \times 0.9 = 3.6 cm\)