40 ft = 480 inches
No.
About 400 ft.
Is 3 bigger than 4? NO! 4 cu ft is bigger.
No. 5.8 ft is bigger than 1 ft.
400 square ft.
4 ft is bigger than 7 meters
Yes!
20 x20 * * * * * And why not 10 ft x 40 ft? And why do you assume it is square or rectangular?
Yes, it is.
1 yd = 3 ft → 300 yd = 300 × 3 ft = 900 ft → 1000 ft is greater than 300 yd.
98 inches is bigger than 8 ft which equals 96 inches