Surface Area of a Hollow Cylinder Calculator

Calculate the total surface area of a hollow cylinder (also known as a tube or pipe) by entering its outer and inner radii and height.

Input Parameters

Calculation Results

Calculation Formula

Surface Area (SA) = 2π(R + r)h + 2π(R² - r²)

Where:
R = Outer Radius
r = Inner Radius
h = Height
π = Pi (approximately 3.14159)

Total Surface Area:

Surface Area of a Hollow Cylinder Calculator Calculator Usage Guide

Learn how to use the Surface Area of a Hollow Cylinder Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the outer radius (R) of the hollow cylinder in your desired unit (e.g., inches, centimeters, or meters).
  2. Enter the inner radius (r) of the hollow cylinder in the same unit as the outer radius.
  3. Enter the height (h) of the hollow cylinder in the same unit as the radii.
  4. Click the "Calculate" button to compute the total surface area.
  5. The result will be displayed in the same unit squared (e.g., square inches, square centimeters, or square meters).

Understanding the Formula

The total surface area of a hollow cylinder is calculated using the formula:

SA = 2π(R + r)h + 2π(R² - r²)

This formula accounts for the lateral surface area (2π(R + r)h) and the areas of the two circular bases (2π(R² - r²)).

Example

If you have a hollow cylinder with an outer radius of 5 cm, an inner radius of 3 cm, and a height of 10 cm, the total surface area would be:

SA = 2π(5 + 3)10 + 2π(5² - 3²) = 2π(8)10 + 2π(16 - 9) = 160π + 14π = 174π ≈ 544.78 cm²