Perimeter

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

To calculate the perimeter of a rectangle, 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. Therefore, P = 4 × 5 cm = 20 cm.

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 the sum of its sides: 3 cm + 4 cm + 5 cm = 12 cm.

Front

What is the perimeter of a polygon?

Back

The perimeter of a polygon is the sum of the lengths of all its sides.

Front

How do you find the missing side length if the perimeter is known?

Back

To find a missing side length, subtract the sum of the known side lengths from the total perimeter.

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

The circumference C of a circle is calculated using the formula: C = 2πr, where r is the radius.

Front

If a rectangle has a length of 10 cm and a width of 4 cm, what is its perimeter?

Back

The perimeter P = 2(length + width) = 2(10 cm + 4 cm) = 28 cm.

Front

What is the relationship between the perimeter and area of a shape?

Back

The perimeter is a measure of the distance around a shape, while the area measures the space contained within it. They are related but represent different properties.