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Mathematics 12 Online
OpenStudy (anonymous):

Geometery. Could you show me how to do this> attachment.

OpenStudy (anonymous):

OpenStudy (dean.shyy):

First calculate the area of the TRIANGLE. Then calculate the area of the CIRCLE. Subtract the area of the CIRCLE from the TRIANGLE. Lastly, multiply the remaining area by the cost, $10.

OpenStudy (anonymous):

The triangle would be: 1/2(b)(h) 1/2(36)(36)= 648 Right?

OpenStudy (anonymous):

And then the circle: pi R^2 pi(6)^2 pi(36) = 113.09..

OpenStudy (dean.shyy):

TRIANGLE area is usually BASE * 1/2 * HEIGHT. CIRCLE area is usually Pi * r ^ 2. So, yes you are right.

OpenStudy (anonymous):

:) Okk cool! thanks

OpenStudy (dean.shyy):

To determine TRIANGLE height, make sure you use Pythagorean Theorem because it does not show you the figure for height.

OpenStudy (anonymous):

thats a^2 + b^2= c^2.. right?

OpenStudy (anonymous):

Ok so i subtract the cirlce by the triangle and i get a -535 * the 10= -5350 but thats not one of the choices

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