Question

Which of the following figure has the least perimeter?
Note: Area of each small square = $1c{m}^2$

• A. Yellow
• B. Red
• C. Green
• D. All have equal area

Answer 1

The correct option is B Red

To find the perimeter, we need to count the number of edges at the boundary of each shape.

$\Rightarrow$ Perimeter of yellow figure= $12cm$
Perimeter of red figure = $10cm$
Perimeter of green figure= $12cm$
$\therefore$ The red figure has the least perimeter.