The length and width of a rectangle are 8cm and 5cm, each measured to the nearest centimetre. What is the upper and lower bounds of the length of the rectangle

Question

The length and width of a rectangle are 8cm and 5cm, to the nearest cm. what is the upper and lower bounds of the length of the rectangle 

Answer 1

The length is 8 cm ± 1 cm so the bounds are:

 

8-1 ≤ L ≤ 8+1

 

7 ≤ L ≤ 9