Answer:

Step-by-step explanation:

Answer:
25
Step-by-step explanation:
First, you find the volume of each individual cube, and then you add everything up.
1^3 +2^3+3^3+4^3 + 5^3 = 225
hope this helped :)
Answer:
13
Step-by-step explanation:
3x^2 = 75
x^2 = 25
x = 5
use quadratic formula for second one