The answer would be -161z-3a
The reason for this has to do with finding the area of a square. When you are looking for the area of a square, you use the rectangle formula (since a square is also a rectangle).
The formula is Area = Length * Width
However, since in a square, the length and width are the same, both get changed to the word "Side". As a result, we get the following formula.
Area = Side * Side
This can be simplified to:
Area = Side^2.
Since each number to the second power also shows the area of a square with that given length sides, it can also be called "squared".
Remember V=lwh
l=6/7
w=6/7
h= 6/7
multiply the three
you get 0.629ft³
or 216/343ft³
Answer:

Step-by-step explanation:
7 raised to 2 means the base 7 is to the power of 2.

7 is squared or multiplied by itself.

Answer:
100
Step-by-step explanation:
55+45=100