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Algebra

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Two rectangles are similar. The first is 4in. wide and 15in. long. The second is 9in. wide. Find the length of the second rectangle.

  • Algebra -

    Similar polygons have corresponding sides in the same ratio, so

    4/15 = 9/x
    4x=135
    x = 135/4 or 33.75

    the 2nd side is 135/4

    check:
    9 : (135/4)
    =36:135
    = 4 : 15
    = 20:27

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