Geometry Unit Quiz Review Ch. 9 Lessons 1, 2, 3 and 6

9-1 Area of Parallelograms A = bh – Base and height must be perpendicular Write formula first! – Plug in values – Solve – Answer = square units

9-1 The base of a building is shaped like a parallelogram. The first floor has an area of 20,000 square feet. If the base of this parallelogram is 250 feet, can its height be 70 feet? Explain.

9-2

Norma has an A-frame cabin. The back is shown below. How many square feet of paint will she need to cover the front and back of the cabin? If a can of paint covers 20 square feet, how many cans will she need?

9-3

Find the height of a trapezoid given that it has an area of 650 square feet and the lengths of its bases are 23 feet and 42 feet.

9-3 Find the area of the figure.

9-6 Area of Composite Figures STEPS: *Split figure 1.Write out what shapes you are finding the area of 2.Show work for each shape 3.Add areas together 4.Label answer (square units)

9-6 Find the area of each figure. Round to the nearest tenth if necessary.

9-6 The picture shows the lobby floor of an office building. The floor needs to be covered with tile. How many square feet of tile are needed? If each square foot of tile costs $1.59, what is the total cost of this project?