Submit a question to our community and get an answer from real people.
Submit

The density of a block that measures 2 in by 4 in by 5 in is 5 kg/m?. What is the mass of the block?

Give me your explanation please thank you.

Report as

Density of an object = its mass / its volume --> Mass = density x volume
Since you have the density in (Kg / m^3), then the mass will be in Kg and the volume should be in (m^3).
Convert the measures of the object from inch to meter, multiply them by each others to find the volume and then multiply the result to the density to find the mass.

Helpful Fun Thanks for voting Comments (0)
Report as
Add a comment...

Alright, first I'm gonna start by stating the formula for mass. It is m=d*v. Okay, now we are going to see that density, or d, is already given. Second, how to find volume? It is length*width*height and that is also given. So just plug it in. m=5kg/m*(5*4*2). After calculating that, it is m=200kg/m

Helpful Fun Thanks for voting Comments (7)
Report as
how about the inches? and by the way that is a m?.
Report as
that is a cubic meter.
Report as
Oh yeah...the inches. Okay well I would guess since the density says kg/m and m is meters. Convert the inches to meters. Then solve it.
Report as
The conversion is 1 inch = 0.0254m
Report as
So instead it's m=5kg/m*1.016m. That ends up as 5.08kg/m
Report as
I got 1.016 by multiplying 40 and .0254 together.
Report as
kg/m the m there is the cubic meter .
Report as
Add a comment...
Do you have an answer?
Answer this question...
Did you mean?
Login or Join the Community to answer