Perimeter

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

To calculate 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 inches?

Back

The perimeter is 16 inches (P = 4 sides x 4 inches = 16 inches).

Front

What is the formula for the perimeter of a square?

Back

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

Front

If a shape has a perimeter of 20 cm and one side is 5 cm, what is the total length of the other three sides?

Back

The total length of the other three sides is 15 cm (20 cm - 5 cm = 15 cm).

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

How do you find the missing side of a shape if you know the perimeter?

Back

Subtract the lengths of the known sides from the total perimeter to find the missing side.

Front

What is the perimeter of a rectangle that is 6 inches wide and 8 inches long?

Back

The perimeter is 28 inches (P = 2(6 + 8) = 28).

Front

If a shape has a perimeter of 18 inches and two sides are 6 inches each, what is the length of the other two sides?

Back

The total length of the other two sides is 6 inches (18 - 6 - 6 = 6).