The perfect squares on either side of 21 are 16 and 25 of which the roots are:
4 and 5
256 is the answer to this question.
800x.32 equals 256 seventh graders
This might help
total surface area Stot = 42.5 ft2
lateral surface area Slat = 30 ft2
top surface area Stop = 6.25 ft2
bottom surface area Sbot = 6.25 ft2
but im thinking they would need 113.7 ft of rapping paper i many be totally wrong tho
