A 9x9 pan is a bit more than half the size of a 9x13 pan, but in
home baking it is used as half the size of the 9x13. So a recipe
written for a 9x9 pan is doubled to fill a 9x13 pan.
9x9 = 81.
I'm gonna have to go with 9x9.
There are 2025 rectangles in a 9x9 grid.
Assuming 9x9 is also in feet,
then answer is 81 square feet.
The cast of 9x9 - 2013 includes: Rustam Shafiyew as Shadow