The roof of a house needs to be resurfaced. The roof is a triangular prism where the base (b) is 20 feet, the length (d) is 40 feet, and the height (h) is 15 feet. Each side of the roof (s1 and s2) has a length of 18 feet. What is the total area that needs to be resurfaced?

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.