SOLUTION: Welding: A type of steel sheet weighs 3.125 lb. per square foot. What is the weight of a piece measuring 24 in. by 108 in.? (Hint: Be careful of units.)

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Question 106415: Welding: A type of steel sheet weighs 3.125 lb. per square foot. What is the weight of a piece measuring 24 in. by 108 in.? (Hint: Be careful of units.)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
If steel sheet weighs 3.125 lb per ft%5E2, and if
1+square+foot = 144+square+inch
Then, we need to find out how many in%5E2 we have if a piece measuring 24+in by 108+in.
It will be:
%2824+in%29%28108+in%29+=+2592in%5E2
Now find out how many times 144in%5E2 goes in 2592in%5E2
It will be: 2592in%5E2%2F144in%5E2+=+18.... here you can eliminate in%5E2
18 is the number that we need to multiply the weigh per ft%5E2,and it will be:
3.125lb%2A18+=+56.25lb
So, the weight of a piece measuring 24+in by 108+in is 56.25lb.