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 the outside of a shape.

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

What is the area of a square with a side length of 4 cm?

Back

Area = 4 cm × 4 cm = 16 square cm.

Front

What is the perimeter of a square with a side length of 5 ft?

Back

Perimeter = 4 × 5 ft = 20 ft.

Front

If a rectangle has an area of 35 square yards and a width of 5 yards, what is its length?

Back

Length = Area ÷ Width = 35 sq yards ÷ 5 yards = 7 yards.

Front

What is the perimeter of a rectangle that is 15 feet long and 21 feet wide?

Back

Perimeter = 2 × (15 ft + 21 ft) = 72 ft.

Front

What units are used to measure area?

Back

Area is measured in square units, such as square meters (m²) or square feet (ft²).

Front

What units are used to measure perimeter?

Back

Perimeter is measured in linear units, such as meters (m) or feet (ft).