19
If the area of a sector of circle of radius $36 \operatorname{cm}$ is $54 \pi \operatorname{cm}^2$, then the length of the corresponding arc of the sector is :
- (a)$8\pi \operatorname{cm}$
- (b)$6\pi \operatorname{cm}$
- (c)$4\pi \operatorname{cm}$
- (d)$3\pi \operatorname{cm}$
Show SolutionHide Solution↓
Sol. (D) $3\pi \operatorname{cm}$