Area & Perimeter

Front

What is Area?

Back

Area is the amount of space inside a shape. It is measured in square units.

Front

What is Perimeter?

Back

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

Front

How do you calculate the area of a rectangle?

Back

Area = Length x Width.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = Length + Width + Length + Width.

Front

If a rectangle has a length of 5 inches and a width of 3 inches, what is its area?

Back

Area = 5 x 3 = 15 square inches.

Front

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

Back

Perimeter = 10 + 4 + 10 + 4 = 28 inches.

Front

What are the units used to measure area?

Back

Area is measured in square units, such as square inches, square feet, or square meters.

Front

What are the units used to measure perimeter?

Back

Perimeter is measured in linear units, such as inches, feet, or meters.

Front

If a rectangle has an area of 24 square inches and a width of 4 inches, what is its length?

Back

Length = Area ÷ Width = 24 ÷ 4 = 6 inches.

Front

If a rectangle has a perimeter of 30 inches and a length of 10 inches, what is its width?

Back

Width = (Perimeter - 2 x Length) ÷ 2 = (30 - 20) ÷ 2 = 5 inches.