Trouble with a density mass problem

[seacow]

Homework Statement

What's the mass (lb) of a soil in an acre 6 inches deep with bulk density of 1.2 g/cm3?

Homework Equations

The Attempt at a Solution

 

[LowlyPion]

Welcome to PF.

Looks like you have a volume calculation problem.

How would you begin to convert to the units of interest?

 

[seacow]

the volume of a half acre is 43,560ft3*.5= 21,780ft3
21,780ft3*mass (1.2g/cm3)=?

 

[LowlyPion]

Well Google says

1 cubic foot = 28 316.8466 cubic centimeters
1 pound = 453.59237 grams