Module 11: Perimeter 3rd

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

To find the perimeter of a rectangle, add the lengths of all four sides or use the formula: P = 2(length + width).

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is its perimeter?

Back

The perimeter is 30 cm (P = 2(10 + 5) = 30).

Front

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

Back

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

Front

If one side of a rectangle is 8 inches and the other side is 3 inches, what is the perimeter?

Back

The perimeter is 22 inches (P = 2(8 + 3) = 22).

Front

What is the formula for the perimeter of a square?

Back

The formula for the perimeter of a square is P = 4 × side length.

Front

How do you calculate the cost of fencing around a garden?

Back

Multiply the perimeter of the garden by the cost per meter of fencing.

Front

If a garden is square and each side is 6 meters, how much will it cost to put a fence around it if the fence costs $5 per meter?

Back

The cost will be $120 (P = 4 × 6 = 24 meters; 24 × $5 = $120).

Front

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

Back

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

Front

If a rectangle has a length of 12 cm and a width of 7 cm, what is the perimeter?

Back

The perimeter is 38 cm (P = 2(12 + 7) = 38).