A right circular cylinder with a radius of 2.3cm and a height of 1.4cm has a total surface area of? a) 5.3*10^-3 b) 7.4*10^-3

I found a) in ##m^2##
The surface area of your cylinder is given by the contribution of 3 parts: 2 circular (top and bottom) and a rectangular (side):
in total:
##A=2*(pir^2)+2pir*h##
where:
##pir^2## is the area of a circle
##2pir## is the perimeter of the circle:
with your data:
##A=2*(3.14*(2.3)^2)+(2*3.14*2.3*1.4)=53cm^2=5.3xx10^-3m^2##