Math Geometry

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Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the Painting is 1 1/4 times the width. What are the dimensions of the painting

this is for elementary school so make it simple

  • Math Geometry -

    1 1/4 in. = 5/4 in.

    Width = W in.
    Length = 5/4 * W = 5W/4 in.

    Area = Length * Width =
    5W/4 * W = 180 1n^2.
    5W^2/4 = 180
    Multiply both sides by 4:
    5W^2 = 720
    W^2 = 144
    W = 12 in. = Width

    5/4 * 12 = 15 in. = Length.

  • Math Geometry -

    Holly wants to make a frame for painting. The painting is square and has an area of 225 square inches. The framing material costs $2.46 per inch. How much will Holly spend framing the picture?

    I don't understand how to get the answer. I was told it is $147.60??

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