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January 29, 2015

January 29, 2015

Posted by **Ning** on Tuesday, August 23, 2011 at 1:32am.

Note: The "altitude" is the "height" of the triangle in the formula "Area=(1/2)*base*height". Draw yourself a general "representative" triangle and label the base one variable and the altitude (height) another variable. Note that to solve this problem you don't need to know how big nor what shape the triangle really is.

- Math -
**Anonymous**, Tuesday, August 23, 2011 at 7:16amA=(1/2)*b*h, and if h=9000 and A=87000 then b=19.(3)

A'=(1/2)*b'*h+(1/2)*b*h'

2*A'-b*h'=b'*h

2*4500-19.(3)*2500=b'*9000

b'=?

- Math -
**Lisa**, Sunday, May 19, 2013 at 5:19pmThis definitely helped me find the answer to my question. However, why do we add a "2" to A'?

Thank you!

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