Problem 99 of 7
Find the radius when arc length is 3pi and central angle is 3pi/4 radians.
Hints
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rearrange s=r theta.
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Central angle must be in radians; rearrange s=r theta.
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Solution
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1. Start with s=r theta.
2. Divide arc length by theta.
3. Simplify the radius.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using degree measure in the radian formula without conversion.