Question

If circumferences of two circles are in the ratio 4:9, find the ratio of their areas​

Answer 1

Answer:

16:81

Step-by-step explanation:

Let the radius of the circles be r1 and r2 respectively.

Then as per question,

2pir1/2pir2=4/9

therefore, r1/r2=4/9.

We have to find the ratio of the areas of the circle,

therefore,

pi(r1)^2/pi(r2)^2=16/81.

which is the required ratio.

Answer 2

Answer:

i hope this will be helpful ....