Math Geometry
posted by Donald on .
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

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. 
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??