Squares in a Tennis Net

First we have to count the number of squares or holes from top to bottom. On this one I count 20 down.

Then we count across to the center strap and I count 136 squares.

Here is the math.

136 x 20 x 2 = 5440

The number may vary depending on the manufacturer but this is what I found on a commercially availble net here in the U.S.A.

Now the question arrives as to why would you want to do this. I once noticed a Pro ask his students to guess the number and found most of them very excited to guess correctly or even close. Make it a contest if you need to but it is just another thing to keep the minds of your students active.