Question

In the figure given below, PQSR is a square. Find the area of the unshaded region.


[2 marks]

Answer 1

Solution:

As the given figure is a square we can clearly see that both the unshaded and the shaded regions form a rectangle.

Now, we have to find the area of the unshaded region.

Consider the unshaded region,
length of the rectangle $=20\text{cm}$
breadth of the rectangle$=20-10=10\text{cm}$

[1 mark]

Now, area of the unshaded rectangle
= length $\times$ breadth
= $(20\times 10){\text{cm}}^2=200{\text{cm}}^2$

[1 mark]