Consider the L-shaped brick in the diagram below. If an ant starts from $A$, find the minimum distance it has to travel along the surface to reach $B$. (a) $\sqrt{5}$ (b) $2\sqrt{5}$ (c) $( 3 / 2 ) \sqrt{5}$ (d) $3\sqrt{5}$
Consider the L-shaped brick in the diagram below. If an ant starts from $A$, find the minimum distance it has to travel along the surface to reach $B$.\\
(a) $\sqrt{5}$\\
(b) $2\sqrt{5}$\\
(c) $( 3 / 2 ) \sqrt{5}$\\
(d) $3\sqrt{5}$