Can anyone help in figuring this problem out? ?

Question

A block of material has demensions of 4.9cm by 7.1cm by 2.5cm. Its mass is 682g. What is the density? In g/cm3?

Answer 1

Density is mass divided by volume.

You know the mass 682g so you need the volume.

Volume of a cube is LxWxH so 4.9 x 7.1 s 2.5 = 86.975cm^3

Therfore density is 682g/86.975cm^3 =7.841g/cm^3

Answer 2

First we need to calculate the volume of the block.

Volume = length x height x depth

V = 4.9 x 7.1 x 2.5 = 87 cm³

Density = mass divided by volume

D = 682 / 87

D = 7.84 g/cm³