The treasure chest below is a prism with a cross-section formed of a rectangle and a semicircle. Work out the volume of the treasure chest. If your answer is a decimal, give it to 2 d.p.

a) V = 1/2 π r² h
b) V = l × w × h
c) V = 1/3 π r² h
d) V = l × w × 1/2 π r