Question

The circumferences of two circle are in the ratio of 1:3.Find the ratio of there areas

Answer 1

Answer:

9:1

Step-by-step explanation:

Given that the ratio of circumference of two circles is 3:1

Let the radius of two circles be m and n

2πm : 2πn = 3 : 1

Hence, m : n = 3 : 1

Ratio of areas of the circles will be ,

2πm² : 2πn² = m² : n² = 9 : 1

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Answer 2

Answer:

formula of circumference is 2πr it means value of circumference depends on radius

formula of area is πr2

area depends on square of radius

so area of circle are in the ratio of 1:9