Dimension of the Box
Length = 4 + x
Width = x
Height = x²+ 1
Base area include ,Length and Width, which will be in the shape of Rectangle.
Area of Box= Length × Breadth
=(4+x)× x
Using Commutativity which states , ⇒ A × B=B × A
=x × (x+4)
Now, Using Distributivity with respect to Multiplication over Addition
=x²+4x
___=1 x²
___=4 x
