Perimeter

Front

What is the definition of 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 cm?

Back

P = 4 x 4 cm = 16 cm.

Front

If the perimeter of a triangle is 24 cm and two sides are 8 cm and 7 cm, what is the length of the third side?

Back

Third side = 24 cm - (8 cm + 7 cm) = 9 cm.

Front

What is the perimeter of a polygon with sides measuring 3 cm, 4 cm, 5 cm, and 6 cm?

Back

P = 3 cm + 4 cm + 5 cm + 6 cm = 18 cm.

Front

What is the formula for the perimeter of a circle?

Back

The perimeter of a circle is called the circumference, calculated as C = 2πr, where r is the radius.

Front

If the radius of a circle is 3 cm, what is its circumference?

Back

C = 2π(3 cm) ≈ 18.84 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

How do you find the unknown side length if the perimeter is known?

Back

Subtract the sum of the known sides from the total perimeter.