Question : The difference between the circumferences of the two circles is 4.4 cm and the radius of the smaller circle is 1.4 cm. The radius of the larger circle is:
Option 1: 4.1 cm
Option 2: 0.7 cm
Option 3: 2.1 cm
Option 4: 3.5 cm
Correct Answer: 2.1 cm
Solution :
The circumference of a circle is given by the formula
Let
According to the question,
Hence, the correct answer is 2.1 cm.