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 distance around a shape, calculated by adding the lengths of all its sides.

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 an area of 36 square feet and a width of 4 feet, what is the length?

Back

Length = Area ÷ Width = 36 ÷ 4 = 9 feet.

Front

If a rectangle has a length of 10 feet and a width of 5 feet, what is its area?

Back

Area = 10 × 5 = 50 square feet.

Front

If a rectangle has a length of 8 feet and a width of 3 feet, what is its perimeter?

Back

Perimeter = 2 × (8 + 3) = 2 × 11 = 22 feet.

Front

What is the area of a rectangle with a length of 7 cm and a width of 6 cm?

Back

Area = 7 × 6 = 42 square centimeters.

Front

If the area of a rectangle is 50 square feet and the width is 10 feet, what is the length?

Back

Length = Area ÷ Width = 50 ÷ 10 = 5 feet.

Front

What is the perimeter of a rectangle with a length of 12 inches and a width of 4 inches?

Back

Perimeter = 2 × (12 + 4) = 2 × 16 = 32 inches.