Ahollow cylinder, open at one end, is constructed of thin sheet metal. the total external surface area of the cylinder is 192pi cm^2. the cylinder has a radius of r cm and a height of h cm.

(i) express h in terms of r and show that the volume, vcm^3 of the cylinder is given by
v=pi/2(192r-r^3).

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: