The maximum area of the rectangle whose sides pass through the vertices
of a given rectangle of sides `aa n db`
is
`2(a b)`
(b) `1/2(a+b)^2`
`1/2(a^2+b^2)`
(d) `non eoft h e s e`
A. `2 (ab)`
B. `(1)/(2) (a+b)^(2)`
C. `(1)/(2) (a^(2)+b^(2))`
D. `(a^(3))/(b)`
