## What is a cube?

Answer – The solid whose all faces are a square is called a cube. A cube has a total of 6 surfaces.

**Volume of Cube-**l³ Cubic unit

**Total surface area of the cube-6**×l² Square unit

**Diagonal of cube-**√3×l unit

## What is cuboid?

A solid whose all faces are an import is called a cuboid. A cuboid has a total of 12 edges.

**Volume of cuboid-**Length × Width × Height (l × b × h) Cubic unit

**Diagonal of cuboid-**√l² + b² + h² unit

**Area of total page (entire) of cuboid-**2 (length × width + width × height + height × length) square unit

## If the box is covered

**Inner length =** outer length – 2 × thickness

**Inner width =** outer width – 2 × thickness

**Inner height =** outer height – 2 × thickness

## If the box is not covered

**Inner length =** outer length – 2 × thickness

**Inner width =** outer width – 2 × thickness

**Inner height =** Outer height – × thickness

### If all the sides of the cube or cuboid are multiplied by k

(a) The surface area k will be multiplied and

(b) Volume will be multiplied

**Choose your lesson**

** real number?**

** polynomial?**