Physics, asked by hdbdb37, 1 year ago

Show if the total surface area of a sphere is same that of the total lateral surface of a right circular cylinder and if that is enclosed.

Answers

Answered by Anonymous
1

 \mathfrak {\underline {\underline{Answer }}}

Proved !!

 \mathfrak {\underline {\underline{Explanation }}}

Let the radius of the sphere be r cm.

Then,

Surface area of the sphere = 4πr² cm²             ...(i)

The radius and height of a right circular cylinder that just encloses the sphere of radius r and 2r respectively.

Surface area of the cylinder = 2πr x 2r

= 4πr² cm²        ...(ii)

From (i) and (ii), we have

Surface area of the sphere is equal to the surface area of the cylinder that just encloses the sphere.

Answered by vineet9900
4

Explanation:

Let the radius of Sphere be ' r '

So As from figure :

Diameter of Cylinder = Diameter of sphere .

Radius of sphere = Radius of Cylinder .

Height of Cylinder = Diameter of sphere .

Surface area of sphere = 4πr²

Lateral surface Area of Cylinder = 2πrh × 2r

= 4πr²

Hence proved .....

Surface area of sphere = Lateral surface area of Cylinder....

Thank you

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