What is the formula for the volume of a rectangular prism?

The formula is Length times width times height

Step-by-step explanation:

You would multiply the length times whatever the width is times the height :)

V= lwh  (see below).

Step-by-step explanation:

The volume = length * width * height.

The length and width refer to the base of the prism.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4