Mathematics

Find the radius of a circle in which an arc of length 44cm subtends angle…

Find the radius of a circle in which an arc of length 44cm subtends angle 200° at the centre of the circle. [Take π = 22/7]

  • A.
    3.9cm
  • B.
    12.6cm
  • C.
    25.2cm
  • D.
    38.4cm
  • E.
    124.5cm
Correct Answer: Option B
Explanation

44 = 200/360 x 2 x 22/7 x r

r = 360 x 7 x 44/200 x 2 x 22

= 12.6cm