Answer: 104
Step-by-step explanation:
Given: Using one 3-foot by 8 foot piece of sheet metal, an installer makes four 6 inch circular ducts.
Thus, the number of ducts made by 1 sheet= 4
By using direct proportion, the number of ducts made by 26 sheets is 26 times the number of ducts made by 1 sheet.
The number of ducts made by 26 sheets = [tex]4\times26=104[/tex]
Hence, the number of ducts made by 26 sheets = 104
