Formulas for All 8 Shapes
| Shape | Area / Volume Formula | Additional |
|---|---|---|
| Circle (r) | A = πr² | Circumference = 2πr |
| Rectangle (l,w) | A = l × w | Perimeter = 2(l+w) |
| Triangle (b,h) | A = ½ × b × h | — |
| Square (s) | A = s² | Perimeter = 4s |
| Sphere (r) | V = (4/3)πr³ | Surface = 4πr² |
| Cylinder (r,h) | V = πr²h | LSA = 2πrh |
| Cone (r,h) | V = (1/3)πr²h | — |
| Cube (s) | V = s³ | Surface = 6s² |
Quick Reference Examples
- Circle r=5: Area = π×25 = 78.54
- Sphere r=3: Volume = (4/3)×π×27 = 113.1
- Cylinder r=4, h=10: Volume = π×16×10 = 502.65
- Cube s=5: Volume = 125, Surface = 150
Frequently Asked Questions
We support area and volume calculations for circles, rectangles, triangles, squares, spheres, cylinders, cones, and cubes.
The volume of a cylinder is the base area times height: V = π * r² * h.
Yes. You can enter high-precision decimal values for dimensions to keep calculations accurate.
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