Area and Height of 2D Shapes

What is the formula for the area of a trapezoid.

• base x height

• 1/2 base x height

• 1/2 h(b₁ + b₂)

• 1/3 base x height

What is the formula for area of a triangle?

• A = bh

• A = bh/2

• A = b + h

• A = b - h

What units do we use to show area?

• units

• squared units

• cubed units

What is the area of a square with a length of 4 cm?

• 16 cm

• 16 cm²

• 8 cm²

• 8 square cm 

Marco's painting has an area of 320 square inches.  If the width of the painting is 16 inches, what is the length of the painting? 
*** Length= Area/Width

• 24 inches

• 22 inches

• 20 inches

• 26 inches 

How is the formula for the area of a triangle related to the formula for the area of a parallelogram?

• The formula for the triangle is the same thing, just cut in half.

• The formula for the triangle is the same thing, just add 2 bases and cut in half.

• They're not related at all.

• They're the same.

What is the formula for area of a triangle?

• A = bh

• A = b + h

• A = bh / 2

• A = b - h

What is the area of a triangle if the base is 10 m, and the height is 4 m?

• 5 cm 

• 8 cm 

• 10 cm 

• 2 m

• 3 m

• 4 m