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Question:
1212When the original area is reduced by 60%, only 40% remains. Find the reduced area by multiplying the original area by 40%: 280 \u00D7 0.4 = 112.
Solve for the radius of the original circle: , so
. Solve for the radius of the reduced circle:
, so
.
When evaluating the ratio of the reduced radius to the original radius, the π in both denominators will cancel to leave
.
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