Question

the radii of two circles A and B are in the ratio 2:3 if the radius of one circle A is 6 cm then radius B will be​

Answer 1

Answer:

Let the radii of two circles be r

1

and r

2

.

Then, according to question, we have

2πr

2

2πr

1

=

3

2

⇒

r

2

r

1

=

3

2

Squaring both the sides, we get,

r

2

2

r

1

2

=

9

4

⇒

πr

2

2

πr

1

2

=

9

4

So, the ratio of the areas of two circles is 4:9

Step-by-step explanation:

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