Perimeter with Missing Sides

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

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

Front

If a rectangle has a length of 10 units and a width of 5 units, what is its perimeter?

Back

P = 2(10 + 5) = 30 units.

Front

What is the formula to find the width if the perimeter and length are known?

Back

Width = (Perimeter/2) - Length.

Front

If the perimeter of a rectangle is 36 ft and the length is 13 ft, what is the width?

Back

Width = (36/2) - 13 = 5 ft.

Front

What is a missing side in a perimeter problem?

Back

A missing side is a side length that is not given but can be calculated using the perimeter.

Front

If the perimeter of a rectangle is 26 units and one side is 8 units, what is the missing side?

Back

Missing side = (26/2) - 8 = 4 units.

Front

What does it mean if a shape has equal sides?

Back

It means that all sides of the shape are the same length.

Front

If a rectangular field has a perimeter of 30 feet and one side is 10 feet, what is the width?

Back

Width = (30/2) - 10 = 5 ft.

Front

What is the perimeter of a shape with two missing sides if the total perimeter is 210 mm?

Back

The two missing sides can be calculated based on the known sides.