Question

The perimeter (in cm) of a square circumscribing a circle of radius a cm, is

• A. 8 a
• B. 2 a
• C. 16 a
• D. 4 a

Answer 1

The correct option is

A

8 a

It is given that a square circumscribes a circle of radius $a$ cm. Side of the square = Diameter of thecircle

$\Rightarrow$ Side of the square$=2a$

$\therefore$Perimeter of the square $=4\times 2a=8a$

Hence, the correct answer is option (A).