Posted by TANGIE on Thursday, December 2, 2010 at 10:39pm.
A CIRCULAR COFFEE TABLE HAS A DIAMETER IF 5FT. WHAT WILL THE COST BE TO BE REFINISHED IF THE COMPANY CHARGES $3.00 PER SQUARE FOOT?
A+=+pi%2Ar%5E2
r+=+2.5
A+=+pi%2A2.5%5E2
A+=+pi%2A6.25
A+=+19.635 ft2
If cost = C
C+=+3%2A19.635
C = $58.90 answer

MATH  MathMate, Thursday, December 2, 2010 at 11:05pm
Correct!
Note that the area of a circle can be
either
πr² or πd²/4
Total cost
=πr²*($3)
=π(d²/4)*($3)

MATH  TANGIE, Friday, December 3, 2010 at 12:12am
Thank you MathMate,
you're a life saver

MATH  MathMate, Friday, December 3, 2010 at 8:46am
I love those candies with a hole in the middle! :)
http://img686.imageshack.us/img686/8472/lifesavercandies.jpg
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