a cube, like the one in the picture below, has a width=length=height, all sides are equal. Now, on this one we know it has a volume of 27 in³.
[tex] \bf \textit{volume of a cube}\\\\
V=x^3~\hspace{10em}\stackrel{V}{27}=x^3\implies \sqrt[3]{27}=x\implies 3= x [/tex]
what happened is, Bethany stayed up late last nite till 2am watching reruns of the Teletubbies, so she needs to take a good nap, is all.
