Unit 14 DIVISION OF DECIMAL FRACTIONS 79 23. Find the wall thickness of this rigid polyvinylchloride...

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Unit 14 DIVISION OF DECIMAL FRACTIONS 79 23. Find the wall thickness of this rigid polyvinylchloride (PVC) tube. 2.181 ft- 2.375 ft 24. A 1-ton HVAC unit will remove up to 12,000 Btu/h. What size unit is needed for a house with a heat load of 28,576 Btu/h? (Round up to the next higher either half or whole number.) 25. A circulating fan can supply 9,525.6 cu ft of air in 1 hour. What is the largest volume room that will have its air exchanged 4.5 times each hour? Unit 14 DIVISION OF DECIMAL FRACTIONS 79 23. Find the wall thickness of this rigid polyvinylchloride (PVC) tube. 2.181 ft- 2.375 ft 24. A 1-ton HVAC unit will remove up to 12,000 Btu/h. What size unit is needed for a house with a heat load of 28,576 Btu/h? (Round up to the next higher either half or whole number.) 25. A circulating fan can supply 9,525.6 cu ft of air in 1 hour. What is the largest volume room that will have its air exchanged 4.5 times each hour?