3rd Grade Perimeter

Front

What is the perimeter?

Back

The perimeter is the total distance around the outside of a shape.

Front

What is the formula to calculate the perimeter of a rectangle?

Back

The perimeter of a rectangle is calculated by adding the lengths of all four sides or using the formula: P = 2(length + width).

Front

If a square has a side length of 5 cm, what is its perimeter?

Back

The perimeter of a square is calculated by P = 4 × side length. So, P = 4 × 5 cm = 20 cm.

Front

What is the perimeter of a rectangle that is 10 cm long and 5 cm wide?

Back

P = 2(length + width) = 2(10 cm + 5 cm) = 30 cm.

Front

What is the perimeter of a square with a side length of 6 feet?

Back

P = 4 × side length = 4 × 6 feet = 24 feet.

Front

If the perimeter of a shape is 40 cm, what could be the lengths of the sides?

Back

Possible lengths could be 10 cm, 10 cm, 10 cm, and 10 cm for a square, or other combinations that add up to 40 cm.

Front

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

Back

P = 3 cm + 4 cm + 5 cm = 12 cm.

Front

True or False: The perimeter can be measured in units like cm, m, or inches.

Back

True.

Front

What is the perimeter of a fence that is 30 meters long?

Back

The perimeter of the fence is 30 meters.

Front

If a rectangle has a perimeter of 34 cm, and one side is 10 cm, what is the other side?

Back

Using P = 2(length + width), we can find the other side: 34 cm = 2(10 cm + width) => width = 7 cm.