Answer:
5. 
6. 
Step-by-step explanation:
5. 
6. 
Answer:
There are four different types. Commutative, associative, distributive and identity. Hope this helps! :)
Step-by-step explanation:
Hi there! The answer is 100πcm^2
The radius of a circle can be found by dividing the diameter by 2. In other words : the radius is half of the diameter.
Therefore, the radius of a circle with a diameter of 20 cm is 10 cm.
The exact area of a circle can be found using the following formula:

In order to find our answer, we need to plug in the data from the question.

Hence, the answer is 100πcm^2.
Answer: answer is 0
Step-by-step explanation:
F(0)=2(0)+5
F(0)=0+5
F(0)=5
Answer:
9
Step-by-step explanation:
54+81=9(6+9)
9 times 9 equals 81