Answer:

Step-by-step explanation:
3 out of 46 rows are going to win, meaning that 43 out of 46 rows are not going to win
Make that a fraction:

Answer: 
Step-by-step explanation:
The formula for calculate the area of a Sector of a circle is:

Where "C" is the central angle in degrees and "r" is the radius.
Based on the data given in the exercise, you can identify that:

(See the figure attached)
Then, you can substitute these values into the formula and then evaluate, in order to calculate the area of lawn that receives water.
The result is:

$133.5 because 3% of 4450 is 133.5
1st character = 26 possibilities ( 26 letters in the alphabet)
2nd character = 26 possibilities
3rd character = 26 possibilities
4th character = 10 ( 10 special characters)
26 x 26 x 26 x 10 = 175,760 combinations