Question 170
The perimeter of a rectangle is $100~\mathrm{cm}$ and the diagonal measures $x~\mathrm{cm}$. What is the area of the rectangle as a function of $x$?
A) $625-x^{2}$
B) $625-\frac{x^{2}}{2}$
C) $1250-\frac{x^{2}}{2}$
D) $250-\frac{x^{2}}{2}$
E) $2500-\frac{x^{2}}{2}$
A) $625-x^{2}$
B) $625-\frac{x^{2}}{2}$
C) $1250-\frac{x^{2}}{2}$
D) $250-\frac{x^{2}}{2}$
E) $2500-\frac{x^{2}}{2}$