A sector of a circle has a central angle of 45° and an arc length of 22 cm. Find the radius of the circle. ( Use π = ).
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 28 cm.
Arc length = 22 cm
Arc length = (θ/360) × 2πr
⇒ 22 = (45/360) × 2 × 22/7 × r
⇒ r = 28 cm