SURFACE AREA OF A CUBOID AND A CUBE

LATERAL SURFACE AREA OF CUBOID:

=

Where l = length of cuboid

b = breadth of cuboid

h = height of cuboid

TOTAL SURFACE AREA OF CUBE:

Since cube is a cuboid in which length (l) = breadth (b) = height (h) side of cube (a) i.e. l = b = h = a

⇒ Total surface area of cube

LATERAL SURFACE AREA OF CUBE:

Area =

So, lateral surface area of cube

Where a = length of a side.

LENGTH OF DIAGONAL OF A CUBOID:

Length of diagonal

l = length; b = breadth; h = height

LENGTH OF DIAGONAL OF A CUBE

Length of diagonal =

Where a = length of a side.