anonymous
  • anonymous
The width of the tiled portion is 2.5 feet. What is the area of the tiled portion of the patio, rounded to the nearest whole square foot?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
can you calculate the area of a circle?
anonymous
  • anonymous
i got 28.26 when i did

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More answers

anonymous
  • anonymous
take the area of the 18 foot circle, subtract the area of the 15.5 foot circle then take half of that since it's a semicircle
anonymous
  • anonymous
to check it, if you want, think of it as a rectangle... half the circumference of a 16.75 foot circle times 2.5 won't be exactly the same, but should be close
anonymous
  • anonymous
Was my area correct before? Just so I can make sure i'm doing it correctly
anonymous
  • anonymous
I got a much different answer, so maybe I am wrong, sorry
anonymous
  • anonymous
What formula did you use? I might have made a mistake
anonymous
  • anonymous
(3.14 x 18 x 18 - 3.14 x 15.5 x 15.5 ) /2
anonymous
  • anonymous
when i recalculated the area i actually just got 13.3
anonymous
  • anonymous
oh let me try that then
anonymous
  • anonymous
no, don't... I am wrong
anonymous
  • anonymous
the options i was given for the answer were: 5 square feet 8 square feet 33 square feet 61 square feet and i'm unable to get any of them
anonymous
  • anonymous
I used the diameter instead of the radius... you were much closer
anonymous
  • anonymous
yes, it's an 18 foot circle and a 13 foot circle so 9 and 6.5 for the radii
anonymous
  • anonymous
I need to get some sleep, but that will give you the right answer
anonymous
  • anonymous
i subtracted the first area 28.26 and the second area for the tiled area 20.41 and got 8? is that the correct way to do it?
anonymous
  • anonymous
take the area of the 18 foot circle subtract the area of the 13 foot circle divide by two (the picture is a semicircle)
anonymous
  • anonymous
then i got the answer of 24.335
anonymous
  • anonymous
how?
anonymous
  • anonymous
oh i accidentally hit addition, let me try that again
anonymous
  • anonymous
i got 7.85
anonymous
  • anonymous
what is the area of the 18 foot circle? the radius is 9 remember
anonymous
  • anonymous
28.26
anonymous
  • anonymous
how did you get that?
anonymous
  • anonymous
9*3.14
anonymous
  • anonymous
area is pi r squared... need to multiply by 9 again
anonymous
  • anonymous
i got 254.34
anonymous
  • anonymous
3.14 * 9 * 9 - 3.14 * 6.5 * 6.5 and then divide that by 2
anonymous
  • anonymous
that sounds much better for the area of the big circle
anonymous
  • anonymous
i got 60.8
anonymous
  • anonymous
and thats one of the multiple choices so I think we did it right....
anonymous
  • anonymous
Hopefully, Thanks!

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