the ratio of the circumference of 2 circle is 2:5. the ratio of their radii is...
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the ratio of the circumference of 2 circle is 2:5. the ratio of their radii is...
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4:9
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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