3rd Grade: Area and Perimeter

Front

What is perimeter?

Back

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

Front

How do you find the perimeter of a rectangle?

Back

Add the lengths of all four sides: P = 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 find the area of a rectangle?

Back

Multiply the length by the width: A = length x width.

Front

What unit would I use to measure the area of a room?

Back

square feet or square meters.

Front

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

Back

15 square meters.

Front

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

Back

12 cm.

Front

What is the formula for the perimeter of a square?

Back

P = 4 x side length.

Front

What is the area of a square with a side length of 6 cm?

Back

36 square cm.

Front

If a shape has a perimeter of 24 cm and is a square, what is the length of one side?

Back

6 cm.