What is the mean of this data?

12, 18, 11, 25, 38, 22

answer: #1 ads up by 8 and i don't know #2

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