In a circle of radius 21 cm, an arc subtends an angle of $60^\circ$ at the centre. The length of the arc is

Question

KollegeApply · Accepted Answer

We have r = 21 cm and $\theta$ = $60^\circ$ Length of arc `=theta/360^circxx2pi"r" = 60^circ/360^circxx2xx22/7xx21 = 22 "cm"` Hence, the correct answer is option (b)

AChoose Your Answer