5/2=40/16. You can try to cross multiply by 2 times 40 and dividing by 16 to get 5.
36 because if you add 21 + 15 you get 36. How by adding it all together. I hope this helped you bye
A number that can be rounded to 4 can be anywhere from 3.5 to 3.9
Area = length x width
So, 36/3 = 12
Width is 12