Problem 74 of 7
Find sector area for radius 10 and central angle 90 degrees.
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use fraction of circle or convert radians.
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Central angle is in degrees; use fraction of circle area or convert to radians.
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Solution
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1. Convert the degree measure to a fraction of 360.
2. Multiply that fraction by pi r squared.
3. Simplify the sector area.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using degree measure directly in A=1/2 r^2 theta.