3D Shape Surface Area Calculator

How to calculate Surface Area?

Total surface area is the sum of the areas of all faces of a 3D object.

Cylinder: 2πr² + 2πrh; Cone: πr² + πrl; Square Pyramid: a² + 2al.

Using the Surface Area Calculator: an example

Consider a Cone with a Radius of 5cm and a Slant Height of 10cm.

Step-by-step calculation:

1. Calculate base area (π * 5²)
2. Calculate lateral area (π * 5 * 10)
3. Sum the results (approx 235.62 cm²)

Frequently Asked Questions

What is slant height?

The distance from the apex to the edge of the base.

Does this include the base?

Yes, these formulas compute Total Surface Area including the base.