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: P = 2(length + width).

Front

What is area?

Back

Area is the amount of space inside a shape.

Front

How do you calculate the area of a rectangle?

Back

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

Front

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

Back

15 square inches.

Front

If a rectangle has a length of 6 inches and a width of 4 inches, what is its perimeter?

Back

20 inches.

Front

What is the formula for the area of a square?

Back

Area = side × side.

Front

If one side of a square is 4 inches, what is its area?

Back

16 square inches.

Front

What is the relationship between perimeter and area?

Back

Perimeter measures the boundary length, while area measures the space inside.

Front

How do you find the unknown side of a rectangle if you know the area and one side?

Back

Divide the area by the known side.