Question

The perimeter of a rectangle is 230 cm. If the length of the rectangle is four times the breadth, what is the breadth of the rectangle?

• A. 18 cm
• B. 20 cm
• C. 21 cm
• D. 23 cm

Answer 1

The correct option is D 23 cm

Let us suppose, breadth of the rectangle is 'b'.
So, length of the rectangle = 4b.
Given that perimeter of the rectangle is 230 cm.
And we know that perimeter of a rectangle = 2 (length + breadth)
$\Rightarrow$ 230 = 2 (4b + b)
$\Rightarrow$ 230 = 2 x 5b
$\Rightarrow$ 230 = 10b
$\Rightarrow$ b = 23 cm
So, the breadth of the rectangle is 23 cm.