The ratio of the volumes of two cylinders A and B is x : y and the ratio of their heights is a : b. What is the ratio of their radii?
Answer & explanation
Correct answer: option 3
Ratio of volumes = \(\pi \)r12h1 : \(\pi \)r22h2
= x : y .... (i)
Ratio of heights = a : b
ATQ,
⇒ \(\frac{x}{y}\) = \(\frac{r_1^2 a}{r_2^2 b}\)
⇒ \(\frac{r_1}{r_2}\) = \(\sqrt{\frac{xb}{ya}}\) = \(\sqrt {xb}\) : \(\sqrt {ya}\)