Perimeter

Front

What is the definition of perimeter?

Back

The perimeter is the 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 5 cm?

Back

The perimeter of a square is calculated as P = 4 × side length, so P = 4 × 5 cm = 20 cm.

Front

What is the formula for the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its three sides: P = side1 + side2 + side3.

Front

If a shape has a perimeter of 30 m and one side is 10 m, what is the sum of the other sides?

Back

The sum of the other sides is 30 m - 10 m = 20 m.

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 of a circle can be found using the formula C = 2πr, where r is the radius.

Front

What is the perimeter of a parallelogram?

Back

The perimeter of a parallelogram is calculated as P = 2(base + height).

Front

If a rectangle has a length of 8 m and a width of 3 m, what is its perimeter?

Back

The perimeter is P = 2(8 m + 3 m) = 2 × 11 m = 22 m.

Front

What units are used to measure perimeter?

Back

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