Area of Rectangles, Parallelograms, Trapezoids, and Triangles

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

If the length of a rectangle is 7 inches and the area is 199.5 square inches, what is the width?

Back

Width = 28.5 inches

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

If the perimeter of an equilateral triangle is 18 inches, what is the length of one side?

Back

Length of one side = 6 inches

Front

What is the area of a triangle with a base of 6 cm and a height of 12 cm?

Back

Area = 36 square cm

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height

Front

If the area of a parallelogram is 98 square cm and the base is 14 cm, what is the height?

Back

Height = 7 cm

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height

Front

If a trapezoid has bases of 10 cm and 6 cm, and a height of 4 cm, what is its area?

Back

Area = 32 square cm

Front

What is the relationship between the area of a rectangle and its dimensions?

Back

The area is directly proportional to both the length and width.