The radii of three concentric circles are in the ratio 1:2:3. Find the ratio of the area between the two inner circles to that between the two outer circles.

The radii of three concentric circles are in the ratio of 4:5:7. What is the ratio of the area between the two inner circles to that between the two outer circles ? तीन संकेंद्रित वृत्तों की त्रिज्या 4: 5: 7 के अनुपात में है। दो बाहरी वृत्तों के बीच के दो वृत्तों के बीच के क्षेत्रफल का अनुपात क्या है?

The radii of three concentric circles are in the ratio 4 : 5 : 7 . What is the ratio of the area between the two inner circles to that between the two outer circles? तीन संकेंद्री वृत्तों की त्रिज्याएँ 4 : 5 : 7 के अनुपात में हैं | दो आतंरिक वृत्तों के बीच के क्षेत्रफल तथा दो बाह्य वृत्तों के बीच के क्षेत्रफल के बीच अनुपात ज्ञात करें

The circumferences of two circles are in the ratio 2:3. Find the ratio of their areas.

The circumference of two circles are in the ratio 2:3. Find the ratio of their areas.

The circumferences of two circles are in the ratio 3:4. Find the ratio of their areas.

The areas of two circles are in the ratio 25:36. Find the ratio of their circumferences.

The areas of two circles are in the ratio 16:25 . Find the ratio of their circumferences.

The areas of two circles are in the ratio 16:25. Find the ratio of their circumferences.

The circumferences of two circles are in the ratio 2 : 3. What is the ratio of their areas ?

The areas of two circles are in the ratio 49:64. Find the ratio of their circumferences.