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

Add the lengths of all four sides or use the formula: P = 2(length + width).

Front

What is the formula for the perimeter of a square?

Back

P = 4 × side length.

Front

If one side of a rectangle is 7 cm and the other is 5 cm, what is the perimeter?

Back

P = 2(7 + 5) = 24 cm.

Front

What units are used to measure perimeter?

Back

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

Front

What is the perimeter of a rectangle with a length of 10 m and a width of 4 m?

Back

P = 2(10 + 4) = 28 m.

Front

If a square has a perimeter of 36 cm, what is the length of one side?

Back

Side length = 36 cm ÷ 4 = 9 cm.

Front

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

Back

P = 3 + 4 + 5 = 12 cm.

Front

How does the perimeter change if you double the length of each side of a shape?

Back

The perimeter also doubles.

Front

What is the perimeter of a rectangle with a length of 8 ft and a width of 3 ft?

Back

P = 2(8 + 3) = 22 ft.