2014 · Q65
The area of a sector of a circle of radius 36 cm is 72π cm^2. The length of the corresponding arc of the sector is
Elementary MathematicsMensuration
- Aπ cm
- B2π cm
- C3π cm
- D4π cm
Explanation
Area = (1/2)rl gives 72π = (1/2)(36)l, so l = 4π cm.