Three dimensional figures are the solids of rectangular , sphere, Conical , Pyramids and Cylindrical shapes.
| Shape | Faces | Sketch | Volume | Surface Area |
| Rectangular
(Cuboid) |
6 |  |
L x B x H | 2 (LB + BH + LH) |
| Sphere | 1 |  |
(4/3)x π x r3 | 4πr2 |
| Cylinder | 3 |  |
π x r2 x h | 2 π r (h+r) |
| Cube | 6 |  |
L x L x L | 6 x L2 |
Diagonal of a Rectangular Solid
Diagonal (MN) ² = L² + B² + H² Where L = Length , B = Breadth , H = Height
We can understand this with following figure
a² = L² + B²
d² = a² + H² = L² + B² + H²