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40 votes
40 votes
What is the length of the circles radius?

What is the length of the circles radius?-example-1
User DavidMWilliams
by
3.1k points

2 Answers

20 votes
20 votes
The answer is 16 cm so it would be A
User Bachor
by
2.8k points
23 votes
23 votes

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).

User Nilsocket
by
3.0k points
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