Perimeter

Front

What is the perimeter?

Back

The perimeter is the total distance around the outside of a shape.

Front

What is the formula to calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width)

Front

If a square has a side length of 5 cm, what is its perimeter?

Back

Perimeter = 4 × side length = 4 × 5 cm = 20 cm.

Front

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

Back

Perimeter = 3 cm + 4 cm + 5 cm = 12 cm.

Front

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

Back

Perimeter = 2 × (10 cm + 5 cm) = 30 cm.

Front

What is the perimeter of a figure with sides measuring 8 cm, 6 cm, 7 cm, and 9 cm?

Back

Perimeter = 8 cm + 6 cm + 7 cm + 9 cm = 30 cm.

Front

If the perimeter of a square is 40 cm, what is the length of one side?

Back

Side length = Perimeter ÷ 4 = 40 cm ÷ 4 = 10 cm.

Front

What is the perimeter of a circle called?

Back

The perimeter of a circle is called the circumference.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius.

Front

If the radius of a circle is 7 cm, what is its circumference?

Back

Circumference = 2 × π × 7 cm ≈ 43.98 cm.