Question

A cross section of a hollow circular pipe shows that its inner diameter is 2 1/10 inches and that the pipe is 3/5 inch thick. What is its outside diameter?

Answer 1

3.3 inch OD is the calculated value.

Explanation:

Answer 2

3 3/10 inches

Explanation:

The thickness of the pipe adds 3/5 inch to the radius. The diameter is twice the radius, so 2 × 3/5 = 6/5 inch is added to the diameter.

2 1/10 + 12/10 = 2 13/10 = 3 3/10 . . . . outside diameter, inches