ty again
Originally Posted by
Cyprus
Use a calculator.
1st one, try (12+x) (16+x) = the area, which was 376 or something. then Solve for x.
my friend said it should be 2x since theres 2 sides to the border thing
but i still ended up with:
(12+2x)(16+2x)=376
192 + 24x + 32x + 4x^2 = 376
4x^2 + 56x + 192 = 376
4^2 + 56x - 184 = 0
4(x^2 + 16x - 46) = 0
yeah.. i also tried it this way..
(12+2x)(16+2x)=376
192 + 24x + 32x + 4x^2 = 376
4x^2 + 56x + 192 = 376
4x^2 + 56x = 184
4x(x+14) = 184
x = 46/x - x
is there like a math forum somewhere so i stop bothering bg forums?