80 possible 2 digit passwords
5040 possible 4 digit PIN's with no repeats
can't see 7 to answer pls tell
Answer:

Step-by-step explanation:
We can start by finding the third side of the triangle/the side of the square using the Pythagorean Theorem:

In this case the side length of the square would be represented by the variable "c" as it is the hypotenuse:




Since the area of a square is the side length square then...

The square root and the squared cancel out giving us...

49498683837. To work these questions out, use column addition, it is a quick and simple way to add large numbers.
Bearing in mind that an absolute value expression is in effect a
piece-wise function with two cases, thus