A cube's volume is length * hight * width
since it is a cube, length hight width are all the same.
so we can use variable x to represent it.
x*x*x
which is

so

cube root both sides
![x = \sqrt[3]{1000} = 10](https://tex.z-dn.net/?f=x%20%3D%20%20%5Csqrt%5B3%5D%7B1000%7D%20%20%3D%2010)
length of its side is 10
Answer:
if you zoom in a little bit and repost it i can help you
Step-by-step explanation:
The tree trunk is a cylinder so we apply that formula:
It is VCylinder = density x pi x radius x height
So the given in our problem is:
Density = 45 lb/ft^3 = 720.8 kg / m³
Radius = 3ft
Height = 10 ft
Insert variables that in our equation:
VCylinder = 720.8 kg / m³ * pi * 3ft² * 10 ft = 5771.26 kgs