<h3>Hello!</h3>

Negative numbers are always less than positive ones.
Do you remember the symbol for "less than"? That's right, "<" :)
Hence,
-6<3
Because
-6 is negative (the - sign tells us that)
3 is positive

<h3>Notes:</h3>
- Hope everything is clear.
- Let me know if you have any questions!
<h3>Answered by:</h3>
~DiamondS~
The answer to this question is:-2.15
I just ask this question on the SnapCalc app the answer is in the image
He will have more than enough because he only needs to cover 84.1425 square feet.