Perimeter with Missing Side Length

Front

What is perimeter?

Back

Perimeter is the total distance around a shape. For rectangles, it is calculated as P = 2(length + width).

Front

How do you find the missing side length when given the perimeter?

Back

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

Front

If a rectangle has a perimeter of 30 cm and one side is 10 cm, what is the other side?

Back

The other side is 5 cm.

Front

What is the formula for the perimeter of a rectangle?

Back

The formula is P = 2(length + width).

Front

If the perimeter of a rectangle is 40 units and the length is 15 units, what is the width?

Back

The width is 5 units.

Front

What is the perimeter of a square with a side length of 6 cm?

Back

The perimeter is 24 cm (P = 4 x side length).

Front

If the perimeter of a rectangle is 50 cm and one side is 20 cm, what is the missing side length?

Back

The missing side length is 5 cm.

Front

How do you calculate the perimeter of a shape with missing side lengths?

Back

Add the known side lengths and subtract from the total perimeter to find the missing lengths.

Front

What is the perimeter of a rectangle with a length of 12 m and a width of 8 m?

Back

The perimeter is 40 m.

Front

If a rectangular garden has a perimeter of 60 meters and one side is 20 meters, what is the other side?

Back

The other side is 10 meters.