ACT Practice: Area and Perimeter

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width)

Front

How do you calculate the area of a rectangle?

Back

Area = length × width

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the relationship between the sides of a right triangle?

Back

Pythagorean theorem: a² + b² = c², where c is the hypotenuse.

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side length

Front

How do you find the area of a square?

Back

Area = side length × side length

Front

What is the formula for the area of a circle?

Back

Area = π × radius²

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius

Front

How do you calculate the area of a parallelogram?

Back

Area = base × height

Front

What is the formula for the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3