Answer: 
Step-by-step explanation: The line labeled 
here is called the hypotenuse. There are a few ways to calculate the hypotenuse, but the most common way is by using this equation: .
I hope this helped! ;) Good luck on your test or quiz or whatever you have to do in order to pass!
Answer:
3.5
Step-by-step explanation:
These are similar triangles.
BC:AC = BD:AD
6:5 is the ratio.
Then, simply multiply:
4.2 x 5/6 = 3.5
So, x = 3.5!
It would be a 90%. In the calculator 18 is what percent of 20.
1/3 ANS
hope this helps and i hope u ace it
Answer: 8 centimeters
Step-by-step explanation: To find the radius of the circle, remember that the formula for the area of a circle is πr² and since we're given that the area of our circle is 64π, we can set up the equation 64π = πr².
To solve for <em>r</em>, we first divide both sides of the equation by π.
On the left side, the π's cancel and we're left with 64 and on the right side, the π's cancel and we're left with r².
So we have 64 = r².
Next, we take the square root of both sides to get 8 = r.
So the radius of our circle is 8 centimeters.
