SOLUTION: a 15 cubic feet concrete foundation is to be made from a material whose density is 275 lb/ft^3. how much of the material is needed to build the foundation? what is its the total s

Algebra ->  Volume -> SOLUTION: a 15 cubic feet concrete foundation is to be made from a material whose density is 275 lb/ft^3. how much of the material is needed to build the foundation? what is its the total s      Log On


   

Question 1043383: a 15 cubic feet concrete foundation is to be made from a material whose density is 275 lb/ft^3. how much of the material is needed to build the foundation? what is its the total surface area?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
v  volume
d  density
m  mass, as if weight is directly related to mass

highlight%28d=m%2Fv%29


highlight%28highlight%28m=dv%29%29


SURFACE AREA?
Let x be edge length of the cube.
x%5E3=v
x=root%283%2Cv%29
Six square sides make the surface.
You are looking for, as a symbolized formula, highlight_green%28highlight%286x%5E2=6%28root%283%2Cv%29%29%5E2%29%29.