Area of shaded region problem

**Badonkadonk** · July 6th 2010, 07:14 PM

Hey, I have a problem I'm not sure how to figure out, It's finding the area of the shaded region, I've attached a picture of the problem, thanks in advance!

**Also sprach Zarathustra** · July 6th 2010, 07:38 PM

Figure it up I say...

$(175+60)(144)-\frac{\pi 60^2}{4}-\frac{\pi 65^2}{2} + \frac{\pi 72^2}{2}$

**Badonkadonk** · July 6th 2010, 08:04 PM

so how did you figure out the (175+60)(144) part? i understand that the 175 comes from the top, but where does the 60 and 144 come from?

**Also sprach Zarathustra** · July 6th 2010, 08:18 PM

60cm is the radius of circle in the corner, 144cm=2*72cm is the diameter of circle...

**Badonkadonk** · July 6th 2010, 08:29 PM

oooo okay i get it, thanks alot!

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