Perimeter and Area Review

Front

What is Perimeter?

Back

Perimeter is the total distance around the outside of a shape. For rectangles, it is calculated as 2 times the length plus 2 times the width.

Front

How do you calculate the perimeter of a rectangle?

Back

To calculate the perimeter of a rectangle, use the formula: P = 2(length + width).

Front

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

Back

The perimeter is 16 inches (P = 2(5 + 3) = 16).

Front

What is Area?

Back

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

Front

How do you calculate the area of a rectangle?

Back

To calculate the area of a rectangle, use the formula: A = length × width.

Front

If a rectangle has a length of 4 inches and a width of 2 inches, what is its area?

Back

The area is 8 square inches (A = 4 × 2 = 8).

Front

What is the perimeter of a square with each side measuring 4 cm?

Back

The perimeter is 16 cm (P = 4 sides × 4 cm = 16 cm).

Front

What is the difference between perimeter and area?

Back

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

Front

If a rectangular garden has a perimeter of 30 feet and a length of 10 feet, what is the width?

Back

The width is 5 feet (P = 2(10 + width) => 30 = 20 + 2(width) => 2(width) = 10 => width = 5).

Front

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

Back

The perimeter is 12 cm (P = 3 + 4 + 5 = 12).