Question

Can u plz help with # 1 and 2

Answer 1

Greetings!

1)

As stated,
`Density = (mass)/(volume)` , so if you plug all the values in: 100ml volume and 0.196g:

`(0.196)/(100)` = 0.00196

2)

First, you need to find the total volume of the wood. If it has a width of 3cm on each side this means its a cuboid. The formula for the volume of a cuboid is:

`x^(3)`

Where in this case x = 3:

`3^(3)` = 27, so the volume is 27.

Now we know the volume and mass so we can simply divide the two:

`(27)/(27)` = 1, so the density is 1g/cm
`^(3)`

Hope this helps!