Area and 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 find the perimeter of a rectangle?

Back

The formula is P = 2l + 2w, where l is the length and w is the width.

Front

What is the area of a rectangle?

Back

The area is the amount of space inside the rectangle, calculated as A = l × w.

Front

What is the formula to find the area of a square?

Back

The formula is A = s × s, where s is the length of one side.

Front

If a square has an area of 36 square inches, what is the length of one side?

Back

The length of one side is 6 inches, since 6 × 6 = 36.

Front

What is the difference between area and perimeter?

Back

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

Front

How do you find the perimeter of a triangle?

Back

Add the lengths of all three sides together.

Front

What is the perimeter of a rectangle with a length of 10 cm and a width of 5 cm?

Back

The perimeter is 30 cm (P = 2(10) + 2(5)).

Front

What is the area of a rectangle with a length of 8 cm and a width of 4 cm?

Back

The area is 32 square cm (A = 8 × 4).

Front

If the perimeter of a square is 20 cm, what is the length of one side?

Back

The length of one side is 5 cm (P = 4s, so s = 20/4).