Geometry

One side of a triangle is 15 inches, and the area of the triangle is 90 square inches. What is the area of a similar triangle in which the corresponding side is 9 inches?

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  1. Why not use the concept I showed you in
    http://www.jiskha.com/display.cgi?id=1274147511
    for a similar problem.

    let me know what you got for this one.

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  2. i don't understand this

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  3. area2/90 = 15^2/9^2
    area2/90 = 225/81
    area2 = 90(225)/81 = 250

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