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

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

Back

The perimeter of a square is calculated as P = 4 × side. So, P = 4 × 4 cm = 16 cm.

Front

What units are used to measure perimeter?

Back

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

Front

If a triangle has sides measuring 3 cm, 4 cm, and 5 cm, what is its perimeter?

Back

The perimeter of the triangle is 3 cm + 4 cm + 5 cm = 12 cm.

Front

What is the perimeter of a circle called?

Back

The perimeter of a circle is called the circumference.

Front

How do you find the circumference of a circle?

Back

The circumference can be found using the formula: C = 2πr, where r is the radius.

Front

What is the perimeter of a rectangle with a length of 10 cm and a width of 5 cm?

Back

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

Front

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

Back

If the perimeter is 20 cm, then each side is 20 cm ÷ 4 = 5 cm.

Front

What happens to the perimeter if you double the length of each side of a shape?

Back

If you double the length of each side, the perimeter also doubles.