Three circles of radius 6 cm are kept touching each other. The string is tightly tied around these three circles. What is the length of the string?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 36 + 12π cm.
r = 6 cm
If three circles are tied around with a string, the length of the string = 2πr + 6r
⇒ 2π × 6 + 6 × 6
⇒ 12π + 36 cm