Question

the rafii of 2 rightcircilar cylinder are in the ratio2:3.the ratio of its csa are 5:6.find the ratio of their heights

Answer 1

Answer :-

We know that CSA of cylinder = 2πrh

$\frac{2\pi rh}{2\pi rh} = \frac{5}{6} \\ \\ \frac{h \times 2}{h \times 3} = \frac{5}{6} \\ \\ \frac{h}{h} = \frac{15}{12} = \frac{5}{4}$

Ratio of height $\color{Red}{5:4}$

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