Question
Download Solution PDFThe circumference of the two circles is 110 cm and 330 cm respectively. What is the difference between their radii?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The circumference of the two circles is 110 cm and 330 cm respectively.
Concept used:
Circumference of a circle = 2πR (R = Radius)
Calculation:
Let the radii of the bigger and smaller circles be R and r respectively.
Difference between their radii = (R - r)
According to the concept,
2πR - 2πr = 330 - 110
⇒ 2π(R - r) = 220
⇒ 44/7 × (R - r) = 220
⇒ (R - r) = (220 × 7)/44
⇒ (R - r) = 35
∴ The difference between their radii is 35 cm.
Last updated on Jul 19, 2025
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