Question

A square of side 1 cm is cut out from a corner of the below given rectangle. What is the perimeter of the resulting figure?

• A. 16 cm
• B. 12 cm
• C. 10 cm
• D. 8 cm

Answer 1

The correct option is B 12 cm


The perimeter of the resulting figure is
$4\text{cm}+3\text{cm}+2\text{cm}+1\text{cm}+1\text{cm}+1\text{cm}=12\text{cm}.$

Note that the perimeter of the rectangle too is $12\text{cm}.$

$(12\text{cm}=2(l+b)=2(4\text{cm}+2\text{cm}\left)\right)$