Answer:
344.1 Ib/ft²
Step-by-step explanation:
This has to do with conversion
23.0Ib/gal × 2ft
Step 1
First we convert 23.0lb/gal to Ib/ft³
1 Ib/gal = 7.48051948 Ib/ft³
23.0lb/gal = X Ib/ft³
Cross Multiply
1 Ib/gal × X Ib/ft³ = 23.0lb/gal × 7.48051948 Ib/ft³
X Ib/ft³ = 23.0lb/gal × 7.48051948 Ib/ft³/1 Ib/gal
X Ib/ft³ = 172.05194804 Ib/ft³ =
Step 2
Since 23.0lb/gal = 172.05194804 Ib/ft³
172.05194804 Ib/ft³ × 2 ft
= 344.10389608Ib/ft²
Approximately to 1 significant figure
= 344.1 Ib/ft²
