The area of a sector of a circle is 110 cm2 and the central angle of the sector is 56°, what is the radius of the circle? (Take π = 22/7)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 15 cm.
We know,
Area of circle = (θ/360) × πr2
Where r = radius
According to the question;
⇒ 110 = (56/360) × 22/7 × r2
⇒ r2 = 225
⇒ r = 15 cm