Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 1)

A rectangular room measures 5.2 m by 3.69 m, both to the nearest centimeter. What is the upper bound of the perimeter of the room?

17.77 m

17.79 m

17.80 m

17.81 m

The upper bound for the sides are: 5.2 + 0.005 = 5.205 and 3.69 + 0.005 = 3.695. Perimeter = 2*(5.205 + 3.695) = 17.80m