SOLID GEOMETRY
Solid geometry, formulas with a 3D view.
Pick a solid, enter its dimensions and get the surface area and volume instantly, with every term of the formula substituted step by step. The 3D preview on the right can be dragged to rotate. Everything runs locally in your browser.
3D preview
Drag to rotate
Formula and substitution
Each term is substituted and summed in order to reach the result.
Surface area S
- 6a²= 6 × 4²96
Total = 96 square units
Volume V
- a³= 4³64
Total = 64 cubic units
Processed locally in your browser
Solution animation · term-by-term substitution
Done: S = 96, V = 64
How to use
Choose a shape under “Solid”, then fill in its dimensions. The page instantly shows the surface area S and volume V, lists the formula with term-by-term substitution below, and renders a draggable 3D preview (auto-rotate optional). Great for school geometry and checking homework.
FAQ
How precise are the results?
Calculations use double-precision floating point and a high-precision π, displayed to at most 4 decimals. Round to the precision your exercise requires.
What if the 3D preview does not load?
The preview depends on three.js from a CDN. Without network access or WebGL support it shows a notice, but the area/volume maths and formula walkthrough are unaffected.