Area and Perimeter

Front

What is Area?

Back

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

Front

What is Perimeter?

Back

Perimeter is the total distance around a shape, measured in linear units.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

If a rectangle has a length of 5 inches and a width of 4 inches, what is its area?

Back

Area = 5 in × 4 in = 20 square inches.

Front

If a rectangle has a length of 6 meters and a width of 3 meters, what is its perimeter?

Back

Perimeter = 2 × (6 m + 3 m) = 18 meters.

Front

What is the area of a rectangle with a length of 7 cm and a width of 3 cm?

Back

Area = 7 cm × 3 cm = 21 square centimeters.

Front

What is the perimeter of a rectangle with a length of 10 inches and a width of 2 inches?

Back

Perimeter = 2 × (10 in + 2 in) = 24 inches.

Front

If the area of a rectangle is 30 square units and the width is 5 units, what is the length?

Back

Length = Area ÷ Width = 30 sq units ÷ 5 units = 6 units.

Front

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

Back

Width = (Perimeter ÷ 2) - Length = (40 cm ÷ 2) - 15 cm = 5 cm.