Similar figures have the same but not necessarily the same size.

Two figures are similar if they have the same SHAPE but not necessarily the same size.

no not all of them.

step-by-step explanation:

some of them have a square base.

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!