Answer:
spring tides is the correct answer of your question
To find density, use <span>p=m/V, which means density equals mass divided by volume.
If the volume is 15.625 cm^3 and the mass is 10 grams, just divide 10 by 15.625.
10/15.625 = 0.64
So the density is 0.64</span><span> mass per unit volume.</span>