Question

The area of a rectangle is $126m^2$ and its length is $12m.$ The breadth of the rectangle is
(a) $10m$
(b) $10.5m$
(c) $11m$
(d) $11.5m$

Answer 1

The correct option is (b): $10.5m$

Let the breadth of the rectangle be ${}^{\prime }{x}^{\prime }m$.

Length of the rectangle $=12m$

Area of the rectangle $=126m^2$

Area of the rectangle = length$\times$ breadth sq units $=(12\times x)m^2=12x{m}^2$

It is given that the area of the rectangle is $126m^2$.

$\Rightarrow 12x=126$

$\Rightarrow x=\frac{126}{12}=10.5$

So, the breadth of the rectangle is $10.5m.$