Question

The length of a side of the square is given as $2x+3$. Which expression represents the perimeter of the square?

• A. $2x+16$
• B. $6x+9$
• C. $8x+3$
• D. $8x+12$

Answer 1

The correct option is D

$8x+12$

The explanation for the correct option :

The perimeter of a square is given as,

$$\begin{gathered} \therefore \mathrm{Perimeter}=4\times \mathrm{side} \\ \Rightarrow =4\times (2x+3)\left[\because \mathrm{side}=2x+3\right] \\ \Rightarrow =8x+12 \end{gathered}$$

Hence, the option $D$ is correct.