Answer:
Step-by-step explanation:
There are 6 digits given: 1,2,3,5,8 and 9
But we are only taking three at a time.
= 6!/3!
= 6*5*4*3*2/3*2
= 6*5*4
= 120
The first and last digits can only be even if the number takes the one of the forms "2 _ 8" or "8 _ 2". The middle number can be any of the remaining four.
This means the probability of getting a number beginning and ending with an even digits is:
= 8/120
= 1/15 ....
For this case we can model the problem as a cylinder.
The volume of a cylinder is given by:

Where,
Ab: base area
h: cylinder height
Substituting values in the equation we have:

From here, we can clear the area of the base
Answer:
An equation that can be used to find the area of the circular base is:
The answer to the question What is the ratio of 4.3 is 4:3
X(x+3)-7(x+3)
x2+3x-7x-21
x^2-4x-21