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|dw:1365192409384:dw|Ok for this one is is easiest to draw it out first.

|dw:1365192545644:dw|

That is the final answer?

No, right?

Like what are the steps?

So:\[144 \left( 10\pi \right) \over 360\]

1440pi over 360?

a=pir^2*10pi/2pir=5pir

Could someone just write out the entire answer so that i can understand the steps easier? Thanks

A=pi r^2/2 pi r*10 pi=5 pi r=5 pi 12=60 pi

Sorry but im not following..Maybe make it easier to read?

A=(πr^2)/2πr*10π=5πr=5π*12=60π

does the / mean a fraction like (pi)(r)^2 over something else?