Math

Surface Area of a Cone Calculator

SA = πr(r + l).

Calculated Output

Surface area 117.69

Slant height 9.487

Step-by-Step Breakdown

1. Values used:

2. Radius = 3

3. Height = 9

4. Surface area = 117.69

5. Slant height = 9.487

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Frequently Asked Questions

Frustum?

Use the frustum calculator.