Question

The length of the rectangle is (4x + 2) and width of the rectangle 6x. Find the

perimeter of the rectangle.


A.10x + 2
B.20x + 4
C.10x + 4
D.20x - 4

Answer 1

B. 20x + 4

Explanation:

Perimeter of a rectangle = 2 × (Length + Width)

= 2 × [(4x + 2) + 6x]

Expand the brackets and bring like terms together:
= 2 × [4x + 2 + 6x]

= 2 × [4x + 6x + 2]
= 2 × [10x + 2]

Expand the brackets by applying the Distributive Law:

= 20x + 4

Option B.