Question

Choose the correct answer from the given four options

If the length of a rectangle is $3$ times its breadth and the breadth is $x$ units, then its perimeter is

• A. $4x$ units
• B. $6x$ units
• C. $8x$ units
• D. $10x$ units

Answer 1

The correct option is C

$8x$ units

The breadth is $x$ units

And, the length of a rectangle is $3$ times its breadth = $3\times x=3x$

Perimeter of rectangle

$=2($length $+$breadth$)$

$$\begin{gathered} =2(3x+x) \\ =2\left(4x\right) \\ =8x \end{gathered}$$

Thus, the perimeter is $8x$ units.

Hence, option C is correct.