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 a side length of 4 cm?

Back

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

Front

If a triangle has sides of lengths 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 formula for the perimeter of a circle?

Back

The perimeter of a circle is called the circumference, and it is calculated 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

P = 2(length + width) = 2(10 cm + 5 cm) = 30 cm.

Front

What does 'unit' mean in measuring perimeter?

Back

A 'unit' is a standard measurement used to express length, such as centimeters (cm), meters (m), or inches (in).

Front

How does changing the length of one side of a rectangle affect its perimeter?

Back

Changing the length of one side of a rectangle will change the perimeter because the perimeter depends on the lengths of all sides.

Front

What is the perimeter of a regular pentagon with each side measuring 6 cm?

Back

The perimeter of a regular pentagon is calculated as P = 5 × side length. So, P = 5 × 6 cm = 30 cm.

Front

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

Back

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