A = 2\pi r^2 + 2\pi rh

Thu, 30 Apr 2026 10:32:38 +0000

Understanding the Surface Area Formula: A = 2πr² + 2πrh The formula A = 2πr² + 2πrh is a fundamental expression in geometry for calculating the total surface area of a right circular cylinder. Whether you're studying math, engineering, architecture, or manufacturing, understanding this formula is essential for solving practical problems involving cylindrical objects such as tanks, pipes, cans, and more. ### What Does the Formula Represent? In the equation: - A represents the total surface area of the cylinder in square units (e.g., square meters, square centimeters). - r is the radius of the circular base. - h is the height (or vertical length) of the cylinder. - π (pi) is a mathematical constant approximately equal to 3.14159.