Question

Steve wants to paint one rectangular-shaped wall of his room. The cost to paint the wall is $4per square meter. If the wall is 10.5 ft long and 20 meters wide, then what is the total cost topaint the wall?

Answer 1

To solve this problem, our first step is to convert all the units to meters, this is because the cost is given in $ per square meter.

Convert the length of the wall, which is given in ft, to meters.

`10.5ft\cdot(0.3048m)/(1ft)=3.2m`

Now, find the area of the wall to know how many square meters you need to paint, use the formula for the area of a rectangle:

`\begin{gathered} A=w\cdot l \\ A=20m\cdot3.2m \\ A=64m^2 \end{gathered}`

Use this area to find the cost to