Which describes the combined variation in the formula V = ℓwh?

A. V varies jointly with ℓ, w, and h.

B. V varies inversely with ℓ, w, and h.

C. V varies jointly with ℓ and h.

D. V varies directly with w and h

This is the concept of proportionality; we are required to find the combined variation for the volume formula given by:

V=length*width*height

V=lwh

here we see that volume is directly proportional to width, length and height;

therefore the correct answer is:

A] V varies jointly as l, w and h