anonymous
  • anonymous
A circular picture is 8 inches in diameter. Part A What is the area of the picture in square inches? A. 4π square inches B. 8π square inches C. 16π square inches D. 32π square inches Part B A frame that is 2 inches wide surrounds the picture. What is the total area of the picture and the frame in square inches? A. 4π square inches B. 12π square inches C. 36π square inches D. 40π square inches
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
i got 16 for the first one and 36 for the second.. is that right

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jtvatsim
  • jtvatsim
I'll do some checking on that. :)
anonymous
  • anonymous
ok thank you
jtvatsim
  • jtvatsim
Alright, assuming you mean 16 pi square inches for part A, yes that is correct. (Trick is diameter = 8 inches, so radius is half of that). For the next part...
anonymous
  • anonymous
for the second i got 36 pi
jtvatsim
  • jtvatsim
And, looks good on the second part. We know the radius of the picture is 4 inches, a 2 inch border gives us a total radius of 6 inches... squaring gives 36, so I'd say yes, you got it! Congrats!
anonymous
  • anonymous
thanks :)
jtvatsim
  • jtvatsim
no problem

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