The ratio between area of two circles is 64 : 49. What will be the ratio of their radius?
Answer & explanation
Correct answer: option 2
Ratio of Area = \(\pi \) (r1)2 : \(\pi \)(r2)2 = (r1)2 : (r2)2
⇒ (r1)2 : (r2)2 = 64 : 49
⇒ r1: r2= 8 : 7
Ratio of radius = 8 : 7