Question

The lengths of a rectangle have been measured to the nearest tenth of a centimetre they are 87.3cm and 51.8cm what is the upper bound for the area and the lower bound for the perimeter.

Answer 1

87.3

Upper bound87.35

Lower bound87.25

51.8

Upper bound 51.85

Lower bound51.75

Explanation:

Take the tenth of a centimeter and divide by 2. .05. This is the error margin. The upper bound is .05 more then the pro final length and the lower bound are .05 less than the original