Perimeter

Front

What is perimeter?

Back

Perimeter is the total distance around the outside of a shape.

Front

How do you calculate the perimeter of a rectangle?

Back

To calculate the perimeter of a rectangle, add the lengths of all four sides or use the formula: P = 2(length + width).

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is its perimeter?

Back

The perimeter is 30 cm (P = 2(10 + 5) = 30).

Front

What is the perimeter of a square with each side measuring 4 inches?

Back

The perimeter is 16 inches (P = 4 sides x 4 inches = 16 inches).

Front

What is the perimeter of a triangle with sides measuring 3 cm, 4 cm, and 5 cm?

Back

The perimeter is 12 cm (3 + 4 + 5 = 12).

Front

What is the unit of measurement for perimeter?

Back

Perimeter is measured in linear units such as centimeters (cm), meters (m), inches (in), or feet (ft).

Front

If a shape has a perimeter of 20 cm and is a square, what is the length of one side?

Back

Each side is 5 cm (P = 4 sides, so 20 cm ÷ 4 = 5 cm).

Front

What is the perimeter of a rectangle that is 8 feet long and 3 feet wide?

Back

The perimeter is 22 feet (P = 2(8 + 3) = 22).

Front

How many feet of fence does Farmer Bob need for a rectangular area that is 40 feet long and 20 feet wide?

Back

Farmer Bob needs 120 feet of fence (P = 2(40 + 20) = 120).

Front

What is the perimeter of a shape with sides measuring 2 cm, 3 cm, and 5 cm?

Back

The perimeter is 10 cm (2 + 3 + 5 = 10).