(a)[2]
Write down expressions, in terms of $x$, for the cuboid's height and width.
(b)[4]
Given that the cuboid has surface area $200\text{ cm}^2$, form an equation in $x$ and demonstrate that it reduces to $7x^2 - 16x - 100 = 0$.
(c)[3]
Solve the equation $7x^2 - 16x - 100 = 0$. Give your answers accurate to $2$ decimal places.
(d)[1]
Find the cuboid's height.