8. (12 pts) a. Find the area of the shape below. Show your reasoning clearly, using brief explanations to make it clear what you did. It may be helpful to draw on the diagram. 8 ft 15.7 ft 19.4 ft 8 ft 19.4 ft 5.7 ft 8 ft b. What is the volume of a prism with the shape from part (a) as a base and a height of 8 ft? Show your work and explain why the formula for the volume of a prism makes sense