Third Grade 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 or use the formula: Perimeter = 2(length + width).

Front

What is the perimeter of a square with each side measuring 5 cm?

Back

20 cm (Perimeter = 4 x side length).

Front

If a triangle has sides measuring 3 cm, 4 cm, and 5 cm, what is its perimeter?

Back

12 cm (3 + 4 + 5 = 12).

Front

What is the perimeter of a shape with sides measuring 6 m, 7 m, and 8 m?

Back

21 m (6 + 7 + 8 = 21).

Front

What is the formula for the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3.

Front

If a rectangle has a length of 10 cm and a width of 4 cm, what is its perimeter?

Back

28 cm (Perimeter = 2(10 + 4)).

Front

What is the perimeter of a shape with sides measuring 2 in, 3 in, and 4 in?

Back

9 in (2 + 3 + 4 = 9).

Front

How do you calculate the perimeter of a polygon?

Back

Add the lengths of all its sides.

Front

What is the perimeter of a square with each side measuring 8 m?

Back

32 m (Perimeter = 4 x 8).