No. Since Water has a density of 1.0g/mL, you do not need to use the density formula. You CAN use it, but it would be pointless.
Eg.
Density * Volume = mass
Since density = 1, then Volume = mass
an olympic size pool is 50.0m long 25.0 m wide. a) how many gallons of water(d = 1.0g/mL) are needed to fill the pool to an average depth of 4.8ft? b) what is the mass (in kg) of water in the pool?
Do I ever use the density formula in this?