Area and Perimeter of Rectangles

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.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

How do you calculate the Perimeter of a rectangle?

Back

Perimeter = 2 × (Length + Width).

Tags

CCSS.4.MD.A.3

Front

If a rectangle has a length of 5 units and a width of 4 units, what is its Area?

Back

Area = 5 × 4 = 20 square units.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a length of 5 units and a width of 4 units, what is its Perimeter?

Back

Perimeter = 2 × (5 + 4) = 18 units.

Tags

CCSS.4.MD.A.3

Front

What is the Area of a rectangle with a length of 7 units and a width of 3 units?

Back

Area = 7 × 3 = 21 square units.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the Perimeter of a rectangle with a length of 7 units and a width of 3 units?

Back

Perimeter = 2 × (7 + 3) = 20 units.

Tags

CCSS.4.MD.A.3

Front

If the Area of a rectangle is 24 square units and the width is 4 units, what is the length?

Back

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

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If the Perimeter of a rectangle is 36 units and the length is 10 units, what is the width?

Back

Width = (Perimeter ÷ 2) - Length = (36 ÷ 2) - 10 = 8 units.

Tags

CCSS.4.MD.A.3