Question

the radii of two circle are in the ratio 2:3 what is the ratio of their circumferences​

Answer 1

Answer:2:3

Step-by-step explanation:

Circumference of a circle= 2πr

r1:r2= 2:3

2π×2x:2π×3x

= 2:3

Answer 2

Step-by-step explanation:

Let the radii of the two circles be 2x and 3x respectively.Let 2x be r1 and 3x be r2.

Circumference of a circle is 2πr.

A/Q

2πr1

-----------

2πr2

=2×22÷7×2x

-------------------

2×22÷7×3x

=2x

------

3x

=2:3