Cube surface (primary school)

Calculate the surface of the cube and the diagonal section if the edge is 4 cm.

Surface Area of a Cube = 6 a ²

Solved:

a=4cm                  d=a√2

P=6a²                   d=4√2 cm

P=6*4²                 Pdp=4√2*4

P=96 cm²             Pdp=16√2 cm²