Surface area is the total area of all the faces of a 3D solid.
Spin the solid
Cuboid
faces
6
6
edges
12
12
vertices
8
8
V − E + F = 8 − 12 + 6 = 2
drag to rotate
Try this
4
surface area = 6·s² = 96
Common surface areas
- Cube: 6s².
- Cuboid: 2(lw + lh + wh).
- Sphere: 4πr².
- Cylinder: 2πr² + 2πrh.