Question

What is the length of the circles radius?

Answer 1

The answer is 16 cm so it would be A

Answer 2

Answer: D. 8 cm.

Explanation:

`l_(arc)=(26)/(9)\pi \ cm\ \ \ \ \Theta=65^0 \ \ \ \ \ r=?\\\boxed {l_(arc)=2\pi r*(\Theta^0)/(360^0) }\ \ \ \ \ \Rightarrow\\\boxed {r=\frac{{l_(arc)}*360^0}{2\pi *\Theta} }.\\r=((26)/(9)*\pi *360^0 )/(2\pi *65^0) =(13*360^0)/(9*65^0) =(40)/(5)=8 \ (cm).`