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10 June, 07:56

The perimeter of a triangle is 240. Its sides are proportional to 3:4:5. The largest side of the triangle is?

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  1. 10 June, 08:03
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    If the sides are proportional you can use the formula:

    3x + 4x + 5x = 240 and solve for x.

    which is: 12x = 240

    x = 20

    The longest side is 5x, so the longest side is 100.
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