It is verg important because once diving "The length of one cathetus in a right triangle with equal catheti is the squareroot of half of the squared hypotenuse. And yeah
Answer:
The rate of change of the function is -5.
Step-by-step explanation:
Given : Function 
To find : What is the average rate of change ?
Solution :
Function 
The rate of change is the first derivative.

Derivate w.r.t. x,

Therefore, The rate of change of the function is -5.
Rectangle side length is 20
20 times 5=100
Sq 10x10=100