someone help this is due in 3 hours i'll post the questions separately please screen shot and graph them.

other answer is correct. i had used the radius of the radius somehow. a website:

it is 10.6 according to my calculations

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!