Respuesta :

Answer:

See below

Step-by-step explanation:

you want kg/m^3    so just divide

    420 kg / 7 m^3 = 60 kg/m^3

nfeinglass910
Answer: 60 kg/m3

Steps:
Formula for density.
= m / V

We are given m and V.
Let’s solve for .
= 420 / 7

= 60