Question

The area enclosed by the pair of lines $xy = 0$ , the line $x - 4 = 0$ and $y + 5 = 0$ is

• A. $10$ s units.
• B. $20$ s units
• C. $0$ s units.
• D. $\frac {5}{4}$ s units.

Answer 1

Answer: (B)

$20$ s units

Answer 2

Given, pair of lines
$xy = 0, x - 4 = 0$
$\Rightarrow x = 4$
and $y + 5 = 0$.
The figure is a rectangle.

In which length is 5 unit and breadth is 4 unit
So, area $= 4 \times 5 = 20$ sq unit