Question

the radius and height. of cyclinder are in ration3:2 nd the volume is 19404 find its radius and height

Answer 1

$volume \: of \: a \: cylinder \: = \pi {r}^{2} h$
let the radius and height be 3x and 2x respectively.
$volume \: of \: a \: cylinder = \frac{22}{7} \times {3x}^{2} \times 2x$
$19404 = \frac{22}{7} \times 9 {x}^{2} \times 2x \\ 19404 = \frac{22}{7} \times 18 {x}^{3} \\ 19404 \times 7 = 396 {x}^{3} \\ 135828 = 396 {x}^{3} \\ {x}^{3} = 49 \\ x = \sqrt[3]{49}$
$radius = 3 \times \sqrt[3]{49}$
$height = 2 \times \sqrt[3]{49}$
I hope it helps you.

Answer 2

I really don't know the answer.
I hope you will honor my skills.