Question

The area of a rectangular park is $3100{\text{m}}^2$ and its breadth is $50\text{m}$. The value of 4 times its perimeter is _________.

Answer 1

Let the length be $x\text{m}$.
Breadth $=50\text{m}$
Now, area = $3100{\text{m}}^2$
$\Rightarrow x\times 50=3100$

$\Rightarrow x=\frac{3100}{50}$

$\Rightarrow x=62$

$\therefore$ Length $=62\text{m}$

Perimeter of the rectangle $=2(l+b)$

$=2(62+50)$

$=224\text{m}$

4 times the perimeter $=(4\times 224)\text{m}=896\text{m}$