Question

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

• A. $100c{m}^2$
• B. $200c{m}^2$
• C. $300c{m}^2$
• D. $400c{m}^2$

Answer 1

The correct option is B

$200c{m}^2$

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 $=20cm$
breadth of the rectangle $=20-10=10cm$

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