Question

if radius of cylinder is double and height become half then what is the ​

Answer 1

Answer:

Let radius of cylinder = r

Let height of cylinder = h

Then, volume of cylinder is given by

V = πr2h …(i)

According to the question, now

Radius of the cylinder = 2r

Height of the cylinder = h/2

Then, volume of cylinder is given by

V’ = π(2r)2(h/2) = 4πr2(h/2) = 2πr2h = 2 (πr2h) = 2V

⇒ V’ = 2V

Thus, volume will be doubled if the radius of a cylinder is doubled and height is halvedre

Answer 2

answer is in attachment