Respuesta :
Answer:
double
Explanation:
radius = r
length = l
Surface area, A = 2 π r l .... (1)
Now the radius is doubled = 2r
length is same
Surface area, A' = 2 x π x 2 r x l
A' = 2 x 2πrl
A' = 2 A (from equation (1)
Thus, the surface area is doubled.
Answer:
Explanation:
Given
radius of cylinder is r and length l
If radius is doubled and length remain same
Surface area of cylinder is [tex]A_1=2\pi rL[/tex]
New Surface area [tex]A_2=2\pi (2r)L[/tex]
Percentage change in Surface area [tex]=\frac{A_2-A_1}{A_1}\times 100[/tex]
[tex]=\frac{2\pi (2r)L-2\pi (r)L}{2\pi (r)L}\times 100=100 \%[/tex]
