Area and Perimeter Warm-Up

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width)

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr or Circumference = πd, where d is the diameter.

Front

What is the difference between area and perimeter?

Back

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

Front

If a rectangle has a length of 10 feet and a width of 4 feet, what is its perimeter?

Back

Perimeter = 2(10 + 4) = 28 feet.

Front

If a circle has a radius of 3 cm, what is its area?

Back

Area = π(3)² ≈ 28.26 cm².

Front

What is the area of a square with a side length of 5 inches?

Back

Area = 5 × 5 = 25 square inches.

Front

If the area of a rectangle is 48 square feet and the length is 8 feet, what is the width?

Back

Width = Area ÷ Length = 48 ÷ 8 = 6 feet.

Front

What is the area of a triangle with a base of 6 cm and a height of 4 cm?

Back

Area = 1/2 × base × height = 1/2 × 6 × 4 = 12 cm².