Grid Perimeter and Area

Front

What is perimeter?

Back

Perimeter is the total distance around the outside of a shape.

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides or use the formula: Perimeter = 2(length + width).

Front

What is area?

Back

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

Front

How do you calculate the area of a rectangle?

Back

Multiply the length by the width: Area = length × width.

Front

What is a square unit?

Back

A square unit is a unit of measure for area, representing a square that is 1 unit on each side.

Front

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

Back

15 square units (Area = 5 × 3).

Front

If a rectangle has a length of 4 units and a width of 2 units, what is its perimeter?

Back

12 units (Perimeter = 2(4 + 2)).

Front

What is the formula for the area of a square?

Back

Area = side × side.

Front

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

Back

16 square units (Area = 4 × 4).

Front

What is the difference between perimeter and area?

Back

Perimeter measures the distance around a shape, while area measures the space inside it.