Area and Perimeter 3rd Grade

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

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

Front

How do you calculate the perimeter of a rectangle?

Back

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

Front

What is the area of a rectangle with a length of 5 cm and a width of 3 cm?

Back

15 square cm (Area = 5 cm × 3 cm).

Front

If a rectangle has an area of 20 square units, what could be its dimensions?

Back

Possible dimensions include 4 units by 5 units.

Front

What is the perimeter of a rectangle with a length of 6 feet and a width of 4 feet?

Back

20 feet (Perimeter = 2 × (6 + 4)).

Front

If the area of a square is 16 square cm, what is the length of one side?

Back

4 cm (Area = side × side, so side = √16).

Front

What is the area of a rectangle with a length of 10 units and a width of 2 units?

Back

20 square units (Area = 10 × 2).

Front

If a dog pen has an area of 36 square feet, what could be one possible set of dimensions?

Back

6 feet by 6 feet.