Problem 135 of 7
Derive the sector area formula for a 60-degree sector.
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compare sector fraction to circle area.
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Derivation must connect central-angle fraction to full circle area.
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Solution
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1. Express the central angle as a fraction of a full circle.
2. Multiply that fraction by pi r squared.
3. Simplify to the sector area formula.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using circumference instead of area.