## sherlockholmes Group Title A block of metal has a width of 3.2cm, a length of 17.1cm, and a height of 4.2cm. Its mass is 1.3kg. Calculate the density. 7 months ago 7 months ago

1. kym02 Group Title

First you find the volume which is length x width x height so therefore, 3.2cm x 17.1cm x 4.2cm gives? you do the math.

2. sherlockholmes Group Title

Yeah, I got that far. For the volume I got 229.8 cm3

3. kym02 Group Title

ok good the formula for density is $P =\frac{ m }{ v }$ where p is the density, m is the mass and v is the volume so you should apply your values and thats it!

4. sherlockholmes Group Title

But do I have to put Kg into g?

5. kym02 Group Title

yes It is wise to convert the kg to g so when you get your answer the SI unit will be g/cm^3

6. kym02 Group Title

Also some people convert the cm to m to obtain $kgm ^{-3}$. Either way is fine!

7. sherlockholmes Group Title

Thanks so much~!

8. kym02 Group Title

you're welcome!