Question

The ideal length of a particular metal rod is 30.5 cm. The measured length may vary from the ideal length by at most 0.015 cm. What is the range of acceptable lengths for the rod?

Answer 1

From 30.485 cm to 30.515 cm.

Answer 2

Remark

The rod goes from 30.5 - 0.015 to 30.5 + 0.015

Calculations

30.5 - 0.015 = 30.485

30.5 + 0.015 = 30.515

Answer: The range = 30.485 cm. to 30.515 cm.