Finding Missing Side Lengths with Given Perimeters

Front

What is perimeter?

Back

Perimeter is the total distance around a shape. It is found by adding the lengths of all the sides.

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides: P = 2(length + width).

Front

If a shape has a perimeter of 32 meters and two sides are 11 meters each, what is the total length of the remaining two sides?

Back

10 meters.

Front

What does it mean if a shape has a 'missing side'?

Back

One side's length is not known.

Front

What is the formula for finding the perimeter of a square?

Back

P = 4 × side length.

Front

If a rectangle has a length of 5 meters and a width of 3 meters, what is its perimeter?

Back

16 meters (P = 2(5 + 3)).

Front

How many sides does a triangle have?

Back

A triangle has 3 sides.

Front

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

Back

12 cm (3 + 4 + 5).

Front

If a shape's perimeter is 20 inches and one side is 5 inches, what is the total length of the remaining sides?

Back

15 inches.

Front

What is the perimeter of a square with each side measuring 6 feet?

Back

24 feet (P = 4 × 6).