herheartchild
New member
- Joined
- Oct 19, 2009
- Messages
- 1
I need help with 2 problems for a test I am taking later today (in about 2 hours!) - I know it is late notice but hopefully someone is online who can help!
1.) You need a black curtain 10 feet high by 30 and a ½ feet across to cover the back of a stage. The fabric you select is 6 feet wide. You decide to sew two pieces together, allowing 2 inches for the center seam, to attain the height of the curtain. If you allow 6 inches per side to be turned under and hemmed, how many yards of fabric do you need to make the curtain?
I did 120/36 x 366/36 = 43920/1296 = 33 8/9 yards for what is NEEDED as far as the 10 x 30.5 feet.
I got that the fabric chosen is 72/36 inches or 2 yards. You use 2 pieces, which is 4 yards, but take out of that 4 inches (I am assuming it means 2 inches per side?) for the seam. This is where I am starting to get confused! I *THINK* that it means that 2 pieces are sewn parallel for the height, and that 2 inches are taken from each piece, which would be 88/36 or 2 1/9 yards. BUT you need 120/36 for the height, which is 3 1/9 yards. So you are missing a whole yard somewhere!
I am really confused and haven't even starting thinking about the whole "6 inches per side" thing, so I have no idea where to go from here - Can someone help please!
Also, this problem, which I am not sure if I got right or not...
2.) Determine the dollar amount for the cement needed for a sidewalk that is 4 inches thick, 3 feet wide, and 40 feet long. The cement is $76 per cubic yard. Calculate the problem using fractions to avoid rounding errors caused by repeating decimals.
I did 4/36 + 36/36 + 480/36 = 520/36 = 14 16/36 = 14 8/18 = 14 4/9 yards needed. Then I did $76 x 14 4/9 yards to get $1098.20. I do not know if this is right but I don't think it is!
1.) You need a black curtain 10 feet high by 30 and a ½ feet across to cover the back of a stage. The fabric you select is 6 feet wide. You decide to sew two pieces together, allowing 2 inches for the center seam, to attain the height of the curtain. If you allow 6 inches per side to be turned under and hemmed, how many yards of fabric do you need to make the curtain?
I did 120/36 x 366/36 = 43920/1296 = 33 8/9 yards for what is NEEDED as far as the 10 x 30.5 feet.
I got that the fabric chosen is 72/36 inches or 2 yards. You use 2 pieces, which is 4 yards, but take out of that 4 inches (I am assuming it means 2 inches per side?) for the seam. This is where I am starting to get confused! I *THINK* that it means that 2 pieces are sewn parallel for the height, and that 2 inches are taken from each piece, which would be 88/36 or 2 1/9 yards. BUT you need 120/36 for the height, which is 3 1/9 yards. So you are missing a whole yard somewhere!
I am really confused and haven't even starting thinking about the whole "6 inches per side" thing, so I have no idea where to go from here - Can someone help please!
Also, this problem, which I am not sure if I got right or not...
2.) Determine the dollar amount for the cement needed for a sidewalk that is 4 inches thick, 3 feet wide, and 40 feet long. The cement is $76 per cubic yard. Calculate the problem using fractions to avoid rounding errors caused by repeating decimals.
I did 4/36 + 36/36 + 480/36 = 520/36 = 14 16/36 = 14 8/18 = 14 4/9 yards needed. Then I did $76 x 14 4/9 yards to get $1098.20. I do not know if this is right but I don't think it is!