Aniela a cumparat 3 caiete si primeste 188 lei rest la o bacnota de 200 lei. cat costa un caiet?

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!