20
30 squared is 900 = 302 80 squared is 6400= 802 add these together and you get 7300 so your answer is 30 and 80
16 and 64
(8²)64 + (4²)16 = 80
-1
82
20
30 squared is 900 = 302 80 squared is 6400= 802 add these together and you get 7300 so your answer is 30 and 80
16 and 64
(8²)64 + (4²)16 = 80
82
51 + 29 = 80
-1
80
There aren't two whole numbers that satisfy those conditions. If that was -80, you could use 8 and -10.
They are 40 and 40
You have to multiply the two numbers to get the square footage. In this problem the results will be 6,400 square feet.