Question

A cylinder and a cone are of same base radius and of the same height . Find the ratio of CSA of Cylinder and Cone ????

Answer 1

Answer:

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Answer 2

≡QUESTION≡

A cylinder and a cone are of the same base radius and of the same height. Find the ratio of the curved surface area of the cylinder to that of cone.​

                                                       

║⊕ANSWER⊕║

GIVEN

Radius of cone = Radius of cylinder = r

Height of cone= height of cylinder = h

CSA of Cylinder = 2πrh

CSA of Cone = πrl

Ratio : $\frac{2\pi rh}{\pi rl }$

$l^{2} = r^{2} + h^{2}$

∴ The required ratio of CSA of cylinder to cone is

$\frac{2h}{\sqrt{r^{2} + h^{2} } }$