Perimeter - Missing side

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

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

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

Front

What is the perimeter of a square with a side length of 4 m?

Back

P = 4 sides x 4 m = 16 m.

Front

If the perimeter of a rectangle is 24 cm and the length is 8 cm, what is the width?

Back

Width = (Perimeter/2) - Length = (24 cm/2) - 8 cm = 4 cm.

Front

What is the formula for the perimeter of a square?

Back

P = 4 x side length.

Front

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

Back

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

Front

What is the perimeter of a rectangle with a length of 12 ft and a width of 6 ft?

Back

P = 2(12 ft + 6 ft) = 36 ft.

Front

If the perimeter of a shape is 50 cm and one side is 20 cm, what is the total length of the other sides?

Back

Total length of other sides = 50 cm - 20 cm = 30 cm.

Front

What is the perimeter of a rectangle with a height of 11 cm and a width of 13 cm?

Back

P = 2(11 cm + 13 cm) = 48 cm.