SOLUTION: I need help with this problem because I am totally lost. Here goes:Sally is making a cover for a round table. When finished, the cover will fit exactly with no excess hanging off.

Question 125890This question is from textbook
: I need help with this problem because I am totally lost. Here goes:Sally is making a cover for a round table. When finished, the cover will fit exactly with no excess hanging off. Sally has to cut the fabric circle with a founr inch larger diameter than the table to allow for hemming. If the table has a diameter of 72 inches, how much fabric does Sally need? (Use 3.14 for Pi. Round to two decimals places.) Thanks again for your help. Sharon This question is from textbook

Found 2 solutions by checkley71, marcsam823:
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
AREA=PI*R^2
AREA=*3.14[(72+4)/2]^2
AREA=3.14(76/2)^2
AREA=3.14*38^2
AREA=3.14*1444
AREA=4534.16 IN^2 WILL BE REQUIRED.
OR ABOUT 3.5 YDS^2.

Answer by marcsam823(57) (Show Source): You can put this solution on YOUR website!
Hi Sharon,
In order to complete her task Sally needs to cut a circle with a diameter of 72 inches + 4 inches for hemming or a total of 76 inches.
1. We will be using the formula for the area of a circle (Pi r^2 = Area)
Since r = the radius of the circle and the radius is equal to half of the diameter our value for r = 76/2 or 38
2. Pi r^2 = Area in square inches of fabric required for the job
3. Pi(r)(r) = Area
3. (3.14)(38)(38) = 4534.16 square inches (to two decimal places)
Hope this helps!

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