Area and Circumference

Rectangles

100

The length is 20 inches. The width is 30 inches. What is the area?

600 square inches

200

What is the formula for calculating the area of a rectangle?

Area = length x width

300

If the length is 5 times more than the width, and the area is 132 cm, what are the two dimensions?

Width = 22 cm, Length = 110 cm

400

If the length of the rectangle is 56 inches, and the width is 48 inches, what is the perimeter?

3,232 inches

500

If the area is 48 square feet, and the width is 3 times more than the length. What is the length?

4 feet

Parallelograms

100

What is the formula for calculating the area of a parallelogram?

Area = base x height

200

If the height of the parallelogram is 2 1/2 feet and the base is 2 feet, what is the area?

5 square feet

300

The slant height of the parallelogram is 7 inches. The height is 6 inches. The base is 10.5 inches. What is the area?

63 inches squared

400

If the base of a parallelogram is 65 inches, and the area is 910 square inches, what is the height?

14 inches

500

If the base is 6.5 inches and the height is 3 5/8 inches. What is the area?

23.56 or 23 9/16 square inches

Trapezoids

100

Base 1 is 42 inches, Base 2 is 18 inches. If the height is 12 inches, what is the area?

360 square inches

200

The height of the trapezoid is 14 feet. Base 1 is 3 1/2 feet, and base 2 is 5 1/2 feet. What is the area?

63 square feet

300

How do you calculate the are of a trapezoid?

A = 1/2 (b₁+b₂) h 

400

Base 1 is 3/4 inches. Base 2 is 1 3/4 inches. The height is 1/3 inches. What is the area?

5/12 or 0.42 square inches

500

Base 2 is twice as much as base 1. If the area of the trapezoid is 100 square cm, and the height is 5 cm, what are the measurements for base 1 and base 2?

Base 1 = 13.3 or 13 1/3, Base 2 = 26.67 or 26 2/3

Triangles

100

The base of the triangle is 71 inches. The height is 5 inches. What is the area?

177.5 square inches

200

What is the formula for the area of a triangle?

A = 1/2bh

300

The base of the triangle is half of the height. If the area is 9 square inches, what is the base?

3 inches

400

The area of a triangle is 150 square meters. If the height is 20 meters, what is the height?

15 meters

500

If the height of a triangle is 4.3 inches, and the base is 6 3/4 inches, what is the area?

14.51 or 14 41/80 square inches

Circles

100

The radius of a circle is 5 cm. What is the circumference? (assume 3.14 for pi)

31.4 cm

200

How do you find the area of a circle?

A = pi x r²

300

The diameter of a circle is 10 cm. What is the area? Use 3.14 for Pi 

78.5 square centimeters

400

How many diameters equal one circumference?

3.14 (aka "pi")

500

If the area of a circle is 78.5 mm, what is the circumference?

31.4 mm