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anonymous
 one year ago
hi there, please help. thx <3
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
anonymous
 one year ago
hi there, please help. thx <3 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

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ChillOut
 one year ago
Best ResponseYou've already chosen the best response.0\[A_{circle}=\pi*r^{2}.\] where r is the radius. You were given the diameter, which is 2 times the lenght of the radius.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so i do 2x the length of the radius and then i'll get my answer, right? @ChillOut

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.0You take half of the lenght of the diameter, which in this case is 8. The radius is 4.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait so my answer is 4 or i multiply it by four? sry i'm confused :b

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437145622174:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so would my answer be D.?

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.0You plug 4 in the equation I presented you, I.E. \[A_{circle}=\pi*(8/2)^{2}= 64/4*\pi\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so i did 60/4 and got 16

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so now i multiply it x pie right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hold on nvm :b i got confused

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[Acircle= \pi \frac{ (dia)^2 }{ 4 }\\A= \pi \frac{ 8^2 }{ 4} inch^2\\A= \pi \frac{ 64 }{ 4 } inch^2\\A=16\pi\ inch^2\\ \therefore\ option\ C\ is\ Correct.\]

ChillOut
 one year ago
Best ResponseYou've already chosen the best response.0Yes. Another way to write the equation is \(A_{circle}=\pi*(\frac{ d }{ 2 })^{2}\) where "d" is the diameter of the circle.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank u guys! sry i went out :b
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