Answer:
8
inches
Step-by-step explanation:
Let l represent the length of the square
The area of a square = l^2
That means,
l^2 = 24 km^2
Take the square root of both sides
l = 
l = 
l = 
l = 2
Now lets find the perimeter
Perimeter of a square, P = 4l
P = 4* 2
P = 8
inches
Step-by-step explanation:
Since the box is a cube,
Length = Width = Height = 45m.
Volume of box = Volume of cube
= Length x Width x Height

A binomial squared is written like

So, we have 
So, we want to complete the square 
We can add and subtract 9 to write

8/7 as an improper and 1 and 1/7 for proper.