Question #5492a

1 Answer
Ryuu
Sep 25, 2017

Not exactly...

Explanation:

No...

You see, the formula for density involves the SI units for mass and volume. For mass, it's typically grams (or kilograms), and for volume, it's usually millilitres (or litres).

So first off, we have to convert #0.250# #"lb"# into #"g"#.

If #1# #"lb"# #=# #453.592# #"G"#, then...

#(1 "lb")/(453.592 "g") = (0.250 lb)/x#

We cross out to solve for #x#.

#x= 113.398#

Now, we can use the formula of #rho=m/v#

#rho=m/v#

#=113.398/130#

#=0.87229230769#

#~~0.872# #"g"/"mL"#

Therefore, the density of the cube of butter is #~~0.872# #"g"/"mL"#.

Hope this helps :)

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