Question

In $⨀(P,6)$, the length of an arc is $\pi$. Then the arc subtends an angle of measure ___at the center.

• A. 30
• B. 60
• C. 90
• D. 120

Answer 1

The correct option is A 30

Given : $r=6$

$l=\pi$

We know that $l=r\theta$

$\Rightarrow \frac{\pi }{6}=\theta$

$\theta ={30}^0$

$\therefore$ The arc subtends ${30}^0$ at $P$.