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Both triangles are similar. The area of the smaller triangle is about 270 ft^2. What is the best approximation for the larger triangle?
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|dw:1376409461359:dw|
Ever seen this formula? A1 / A2 = (l1 / l2)^2
Dont think i have
Well, now you've seen it.
Area 1 / area 2 = (length 1 / length 2)^2
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(25/35)^2= .510
So A1 = 270, and 270 / A2 = .510
Solve for A2 and thats your answer
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