If perimeter of the circle is 13.2 cm, then the radius of the circle is _________. (Take = )
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 2.1 cm.
The perimeter of the circle = 13.2 cm
Perimeter of the circle = 2πr
where r is the radius of the circle
According to the question;
⇒ 2πr = 13.2
⇒ 2 × 22/7 × r = 13.2
⇒ r = 2.1 cm