Question

Canvas paint costs $3.50/sq ft. What is the cost of painting the mural (more info in details)?

A rectangular painting occupies 6 sq ft. A company wanted the artist to recreate the painting as a wall mural so the length and width of the mural are 5 times bigger than the dimensions of the painting.

I'm confused on how to find the original dimensions of the painting if only given the area...

Answer 1

The cost of painting the mural: `$105`

Explanation:

Given: canvas paint costs `($ 3.50)/(ft^2)`. A rectangular painting is `6 ft^2`. A mural is `5` times bigger.

The size of the mural is `5 xx 6 ft^2 = 30 ft^2`

The cost of painting the mural:

`($ 3.50)/cancel(ft^2) xx (30 cancel(ft^2))/1 = $105`