Look at this shape:
Assume AB = AF = FE = ED and BC = CD, and all the angles in the shape are 90 degrees.
Let A be the area of this shape (in cm^2), and P -- the perimeter of this shape (in cm).
If A - P is 60, what is the length of line AC?
6√5 i think. What i did is i represented the area as 3x² and the perimeter as 8x, so i got 3x² - 8x =60 then i solved the quadratric formula and got x=6, and Pythagorean theorem from there... and got 6√5, might be wrong, and probably am but wth i'll try...
Posted by iggyb387
on 2003-10-15 20:06:16