R varies directly as S and inversely as T. if R = 8 when S = 4 and T = 3, then R is equal to ​

answer: b

step-by-step explanation:

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!