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The ratio between area of two circles is 9 : 25. What will be the ratio of their radius? |
9 : 25 3 : 5 81 : 625 9 : 5 |
3 : 5 |
Ratio of Area = \(\pi \) (r1)2 : \(\pi \)(r2)2 = (r1)2 : (r2)2 ⇒ (r1)2 : (r2)2 = 9 : 25 ⇒ r1: r2= 3 : 5 Ratio of radius = 3 : 5 |
