Given:
.
To find:
The value of r.
Solution:
We have,
.
We know that the radius is perpendicular to the tangent at the point of tangency
AD is the tangent and CD is the radius. So, CD is perpendicular to AD at point D, i.e., 
.
Using Pythagoras theorem, we get
On further simplification, we get
Therefore, the value of r is 9.
Answer:
The result for this equation is 
.
Step-by-step explanation:
-Solve the equation:
-Use Distributive Property:
-Subtract 6x and from 12x :
-Add both sides by 30:
-Then, you divide both sides by 6:
So, therefore the answer is .
A perfect number is a number where the sum of its divisors is equal to the number.
For example 6: 1 + 2 + 3 = 6
Another example is 28: 1 + 2 + 4 + 7 + 14 = 28
Here is a short list of perfect numbers: 6, 28, 496, 8128, <span>33550336, and the numbers get way bigger as we go on.</span>
Final Answer M= 4,12 i think this is adding
