NM CID MM-1 Practice Questions - New Mexico CID MM-1 Plumbing Examination Exam

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A 4 inch Schedule 40 pipe has an inside diameter of 4.026 inches. What is the approximate internal volume of 10 feet of that pipe? Use volume = π r² L, with 1 cubic foot = 7.48 gallons.
Correct Answer:
6.6 gallons

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