Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of (pi)/(6) at the centre.

Calculate the length of the arc of a circle of radius 31.0 cm which su

1.	Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of (pi)/(6) at the centre.
Answer» SOLUTION :Plane ANGLE `theta=(l)/(R)` radian `:.(pi)/(6)=(l)/(3l)( :. theta=(pi)/(6) and r=31 cm)` `:.l=31xx(pi)/(6) cm=(31xx3.14)/(6) cm` `16.22 cm` By ROUNDING off to THREE significant figures, it would be `16.2 cm`