Question

two circle have diameter in the ratio 1:3 find the ratio of their circumference​

Answer 1

Answer:

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

Answer 2

Step-by-step explanation:

Let the. diameter of the first circle be x

And radius of the first circle be x/2 unit

Let diameter of the second circle be 3x

radius of the second circle be 3x/2

∴ratio=2\π x/2 : 2\π 3x/2

=x : 3 : x

=1 : 3

hence, 1 : 3 is the required ratio.

hope it will help u.....