gabbyalicorn
  • gabbyalicorn
A porch has the shape of a quarter circle with a diameter of 5 ft. What is the approximate area of the porch, rounded to the nearest square foot? Use 3.14 to approximate π.
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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gabbyalicorn
  • gabbyalicorn
@jabez177
jabez177
  • jabez177
Remember the formula of a quarter circle?
gabbyalicorn
  • gabbyalicorn
i'm guessing 3.14 x 5 ?

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gabbyalicorn
  • gabbyalicorn
umm no, sorry.
jabez177
  • jabez177
I remember I skipped this lesson... xD
jabez177
  • jabez177
Let me google it.
gabbyalicorn
  • gabbyalicorn
kay.
jabez177
  • jabez177
Here! I had to look through my previous lessons. http://prntscr.com/7f3u1u
gabbyalicorn
  • gabbyalicorn
3.14 x 2.5 x 2.5 = 19.625? maybeh?
gabbyalicorn
  • gabbyalicorn
is that the answer? ^
anonymous
  • anonymous
Find the circumference then divide it by 1/2 then 1/2 again to find it.
gabbyalicorn
  • gabbyalicorn
so 3.14 x 5 =15.7 div 2 = 7.85 div 2 = 3.925?
anonymous
  • anonymous
Oh area sorry give me a sec
gabbyalicorn
  • gabbyalicorn
5
anonymous
  • anonymous
area=πr^2, and if your trying to find a quarter of that then you can divide by 1/2 twice. SO ya it looks like you got it right.
gabbyalicorn
  • gabbyalicorn
:d yay C:
anonymous
  • anonymous
Multiply by 1/2 not divide
anonymous
  • anonymous
Sorry for that mistake. Good Job
gabbyalicorn
  • gabbyalicorn
√ ty

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