Celia knows that the simplified expression should also equal 28
. which shows celia’s simpllifed expression?

i agree because i see the other persons thinking is clear

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