Please help me find the density for this object

D

Explanation:

Density is d=m/v

We have mass, it's 540

The volume is length*width*height

So it's 5*6*4=120 cm^3

540/120=4.5 g/cm^3

It's cm^3 because volume is in cubic centimeters.

1 a

2 d

3 a

4 c

explanation:

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error