Question

who will answer my question I will mark as brainliest​

Answer 1

Answer:

2 times (a) is the correct answer of this question.

Please mark me as brainlist.

Answer 2

Answer:

lateral surface area of cylinder LSA 1= 2 πrh

 when height is doubled then LSA 2 = 2πr(2) = 4 πr

now LSA 1= LSA 2

       2πrh = 4 πr

       2h= 4

         h=2