(a(i))[1]
Show that $AD$ has length $5x + 8$.
(a(ii))[4]
Work out the value of $x$ from this.
(a(iii))[1]
Find the overall shaded area.
(b(i))[1]
Show that at most 24 of these cuboids will fit inside the box.
(b(ii))[4]
Calculate the volume of the empty space in the box. Include the units in your answer.
(c)[2]
Calculate the size of $x$ from this information.