Question

find the radius of the circle in which a central angle of 45° intercepts an are 132 cm. (π = 23/7)​

Answer 1

Answer:

Central angle (0) = (length arc)/radiu.(1)

Convert angle in radian: Angle in radians Angle in degrees X T/180°

= 45° X π/180°

= π/4 From (1), Radius

= (length arc)/Central angle

= 33/(π/4) = 132 x 7/22

42

Therefore radius is 42 cm.