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 find the area of a rectangle?

Back

Multiply the length by the width (Area = length × width).

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

How do you find the perimeter of a rectangle?

Back

Add the lengths of all four sides (Perimeter = 2 × (length + width)).

Tags

CCSS.4.MD.A.3

Front

What is the formula for the area of a square?

Back

Area = side × side (or side²).

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side.

Tags

CCSS.3.MD.D.8

Front

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

Back

Area = 5 × 3 = 15 square units.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a square has a side length of 4 units, what is its perimeter?

Back

Perimeter = 4 × 4 = 16 units.

Tags

CCSS.4.MD.A.3

Front

What is the perimeter of a triangle with sides measuring 3, 4, and 5 units?

Back

Perimeter = 3 + 4 + 5 = 12 units.

Tags

CCSS.3.MD.D.8

Front

If the area of a rectangle is 20 square units and the length is 5 units, what is the width?

Back

Width = Area ÷ Length = 20 ÷ 5 = 4 units.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3