Its R
you can just see in figure as square root of 50 is approximately around 7.07
The sum of the angles of a triangle ALWAYS sum up to 180 degrees. So to find the other angle, you would take 180, subtract 90, and then subtract 26, to get 64.
The measure of the 3rd angle equals 64.
If Kareem put 8 quarts the dryer will run for 48 minutes
Hope this helps
To do this add all the numbers up then divide it by the amount of numbers there are