Roy built a cardboard house for his pet rabbit. The house is 30 cm long and shaped like a symmetrical trapezoidal prism on top of a rectangular prism. One of the ends has a circular hole. A cross-section of the house is shown. a) Determine the volume of space inside the house. 30 cm b) Roy painted the exterior of the house, including the rectangular base at the bottom. What is the surface area that he painted?
