The circumference of the two circles is 110 cm and 330 cm respectively. What is the difference between their radii ?
Answer & explanation
Correct answer: option 4
We know that,
Circumference of a circle = 2πR
The circumference of the two circles = 110 cm and 330 cm
Let the radii of the bigger and smaller circles be R and r respectively.
According to the question,
2πR - 2πr = 330 - 110
= 2π(R - r) = 220
= \(\frac{44}{7}\) × (R - r) = 220
= (R - r) = 35