Question 558652
Cylinder A surface area = 2pir1(r1+h1)


Cylinder B surface area = 2pir2(r2+h2)=x

r2=4r1
h2=4h1

surface area of cylinder B = 2pi*4r1(4r1+4h1)

{{{ ((2*pi*r1(r1+h1))/(2pi*4r1(4r1+4h1)))= 36/x}}}

{{{((r1+h1)/(4*4(r1+h1)))= 36/x}}}

x=36*16
x= 5766  cm^2