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Mathematics 15 Online
OpenStudy (nuccioreggie):

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

OpenStudy (nuccioreggie):

@Michele_Laino

OpenStudy (michele_laino):

area A of a circle is: \[A = \frac{{\pi {D^2}}}{4}\] where D is the diameter

OpenStudy (nuccioreggie):

So the answer is D

OpenStudy (nuccioreggie):

Is the answer A i ment

OpenStudy (michele_laino):

hint: \[A = \frac{{\pi {D^2}}}{4} = \frac{{\pi {8^2}}}{4} = \frac{{\pi \times 64}}{4} = ...?\]

OpenStudy (nuccioreggie):

A

OpenStudy (michele_laino):

no, since 64/4=16

OpenStudy (nuccioreggie):

Oh its C

OpenStudy (michele_laino):

correct!

OpenStudy (nuccioreggie):

Thnx

OpenStudy (michele_laino):

:)

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