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December 13th, 2018, 06:03 PM   #1
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Find the area of the shared region.

So far, for number 14 I believe the area of the circle is 12pi. I just don't know how to solve the additional information. For number 15, I'm completely lost. Please help.
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Last edited by skipjack; December 13th, 2018 at 07:33 PM.
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December 13th, 2018, 06:50 PM   #2
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So far, for number 14 I believe the area of the circle is 12pi. I just don't know how to solve the additional information. For number 15, I'm completely lost. Please help.
You seem unaware of the basics: attending math classes?
If so, what grade are you in?

14: area is pi * r^2 = pi * 6^2 = pi * 36

15: what is the area of the right triangle in top right quadrant?

Last edited by skipjack; December 13th, 2018 at 07:34 PM.
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December 13th, 2018, 07:27 PM   #3
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You (or someone using the same username) posted these same questions on another site earlier today, showed your work, which I checked and found you were correct.
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December 13th, 2018, 07:55 PM   #4
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Originally Posted by Etrujillo View Post
I believe . . . I'm completely lost.(
Start by putting some letters on the diagram, so that you can make precise statements about it. Then write down what you can work out, even if it seems unnecessary or irrelevant.

What formula do you know for calculating the area of a triangle? Is there a corresponding formula for the area of a sector of a circle?
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December 14th, 2018, 02:33 AM   #5
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In each question there is a large fraction of a circle touching a triangle. You can find the area of both of these. For 15, you can also find the area of the entire circle from which you subtract the parts you don't need.
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December 14th, 2018, 05:11 AM   #6
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15:
a = total area of circle
calculate 3/4 of a
add area of right-angle triangle
HOKAY?
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