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Mathematics 8 Online
OpenStudy (anonymous):

using the illustration below, calculate the area of the circle. A. 19.63 inch^2 B. 78.54 inch^2 C. 15.70 inch^2 D. 16.93 inch^2

OpenStudy (mertsj):

I assume you are posting the illustration at some point?

OpenStudy (anonymous):

|dw:1364432624126:dw|

OpenStudy (anonymous):

@Luis_Rivera

OpenStudy (mertsj):

Do you know the formula for the area of a circle?

OpenStudy (anonymous):

no

OpenStudy (mertsj):

\[A=\pi r^2\]

OpenStudy (anonymous):

thats what I thought so..?

OpenStudy (mertsj):

So replace pi with 3.14, replace r with 2.5 and calculate the area.

OpenStudy (anonymous):

i got

OpenStudy (anonymous):

i got A

OpenStudy (mertsj):

yep

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