Question

The perimeter of a rectangle is 12 metres. The length is 3 more than twice its width.
What is the relation between length and width in terms of equation.

• A. $l=3+2b$
• B. $l+b=12$
• C. $l=2b-3$
• D. $b=2l-3$

Answer 1

The correct option is A $l=3+2b$

Let length and width be l and b.
$2(l+b)=12$
$l+b=6$
$l=3+2b$
$6-b=3+2b$
$3b=3$
$b=1,l=5$
Area $=lb=1\times 5=5$