anonymous
  • anonymous
The width of the tiled portion is 1.5 feet. What is the area of the tiled portion of the patio, rounded to the nearest whole square foot?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
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bahrom7893
  • bahrom7893
Let's first find the area of a a semicircle with the tiled part.
anonymous
  • anonymous
I did that but I think I got a wrong answer. I got 56.74

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bahrom7893
  • bahrom7893
A=(pi*r^2)/2=(25pi)/2
anonymous
  • anonymous
Ohh I forgot to divide by 2.
bahrom7893
  • bahrom7893
Now find the area of just that untiled part: A=(pi*3.5^2)/2
bahrom7893
  • bahrom7893
Since if the radius is 5 and the width is 1.5 u'll subtract the width from the radius. Can you finish this off?
anonymous
  • anonymous
Yes I can thank you
anonymous
  • anonymous
and it is still dividing by 2 right?
bahrom7893
  • bahrom7893
yes

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