Area and Perimeter

Front

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

Back

A = l × w (Area = length × width)

Front

What is the perimeter of a shape?

Back

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

Front

If a rectangle has a length of 10 inches and a width of 5 inches, what is its area?

Back

50 sq in (Area = 10 × 5)

Front

What do you need to calculate the perimeter of a rectangle?

Back

You need the lengths of all four sides or just the length and width.

Front

What is the area of a square with a side length of 4 cm?

Back

16 sq cm (Area = 4 × 4)

Front

If the perimeter of a rectangle is 30 inches and the length is 10 inches, what is the width?

Back

5 inches (Perimeter = 2l + 2w; 30 = 2(10) + 2w) => 2w = 10 => w = 5

Front

What is the space inside an object called?

Back

Area

Front

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

Back

24 cm (Perimeter = 4 × side length = 4 × 6)

Front

If a shape has an area of 36 sq in and a width of 6 in, what is the length?

Back

6 in (Area = l × w; 36 = l × 6 => l = 6)

Front

What is the difference between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.