Perimeter and Circumference #2

Front

What is the definition of perimeter?

Back

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

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2(length + width)

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side length

Front

What is the formula for the circumference of a circle?

Back

Circumference = π × diameter or Circumference = 2 × π × radius

Front

If a circle has a radius of 5 cm, what is its circumference? (Use π = 3.14)

Back

Circumference = 2 × 3.14 × 5 = 31.4 cm

Front

What is the relationship between diameter and circumference?

Back

The circumference is π times the diameter.

Front

How do you find the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3

Front

What is the perimeter of a shape with sides measuring 4 cm, 5 cm, and 6 cm?

Back

Perimeter = 4 + 5 + 6 = 15 cm

Front

What is the perimeter of a semi-circle with a diameter of 10 cm? (Use π = 3.14)

Back

Perimeter = (1/2 × π × diameter) + diameter = (1/2 × 3.14 × 10) + 10 = 15.7 cm

Front

How do you estimate the diameter of a circle if you know its circumference?

Back

Diameter = Circumference / π