Order the values least to greatest

Explanation:

|x| is the absolute value and cannot be negative, so |-1.8| = 1.8. Nothing else changes, however.

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!