Х+бу =20
x+3y = 14
Solve the simultaneous equations

х+6у =20

x+3y = 14               //-1

х+6у =20

-x-3y = -14

3y = 6

y = 2

x + 3(2) = 14

x + 6 = 14

x = 14 - 6

x = 8

b). 4320 have a nice day

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a