Joe is finding the length of a rectangular prism. The volume of the prism is 204 ft3. The width is 3.5 ft, and the height is 5 ft. His work is shown below.

V = l w h. 204 = 3.5 (5) l. 204 = 8.5 l. StartFraction 204 Over 8.5 EndFraction = StartFraction 8.5 Over 8.5 EndFraction l. 24 = l.

What error did Joe make?

B. He incorrectly substituted into the volume formula.
C. He added 3.5 and 5 when he should have multiplied them.
D. He incorrectly divided 204 by 8.5.
E. He did not make a mistake in finding the length of the prism.