Layla wants to build a wooden box with the volume of 45cubic centimeter. She started with a width of 3cm and a height of 3cm . How long should Layla make the box?
The volume of the box is lengthwidthheight
So length3cm3cm=45cm³
Let \(l=\) the length of the box
We have
\(l*3*3=45\)
⇒\(9l=45\)
⇒\(l=5\)
So the length should be 5 cm.