Bounds (upper and lower)

Step 1: find the level of accuracy e.g. 0.1Step 2: half of the level of accuracy . this is the tolerance, hoe much of the rounded off number will be changed by e.g. 0.05Step 3: add this to find the upper bound, take it away to find the lower bound.E.G's          acc     lower     upper15        1        14.5     15.57.4      0.1      7.35      7.45120      10      115        1255300    100    5250     53501.12    0.01    1.07      1.17

4m by 5m_ _ _ _ _ |             ||             ||             ||_ _ _ _ _|

4m:upper = 4.5lower =3.55m:upper = 5.5lower = 4.5

Lower area: = 3.5 x 4.5 = 15.75m^2Upper area = 4.5 x 5.5 = 24.75m^2Area = 20m^2

Biggest = Upper bound/lower boundSmallest = Lower bound/ upper bound

E.G.24 and 21Upper 24.5 and 21.5Lower 23.5 and 20.5

Biggest = 24.5 x 21.5Lowest = 23.5 x 20.5

Upper and lower bounds

Area Bounds

Biggest and smallest Bounds