Question

If the ratio of the radii of two circles is 5 : 4, then calculate the ratio of their circumferences. (Write proper steps)

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Answer 1

• Ratio of their circumference is 5:4

Question:

• If the ratio of the radii of two circles is 5 : 4, then calculate the ratio of their circumferences. (Write proper steps)

Solution:

• It is given that,
• ratio between the ratio is 5:4
• so, radius 1 is 5 unit
• And, radius 2 is 4 unit
• Therefore,
• Circumference 1 is 2xπx5
• Circumference 2 is 2xπx4
• So, the ratio is 2xπx5/2xπx4 =5/4

Hence:

• Ratio of their circumference is 5:4