Question

What is the perimeter of the given rectangle?

• A. 5a
• B. 6a
• C. 7a
• D. 8a

Answer 1

The correct option is B 6a

Perimeter of any closed figure is the distance around the closed figure.
Consider a rectange of length l and breadth b,
Perimeter = sum of length of all sides = l + b + l + b
= 2 x (l + b)
Here, length = 2a and breadth = a .
Therefore, perimeter of the given rectangle = 2 x ( 2a + a)
= 2 x (3a)
= 6a