Question

a lateral surface area of a cylinder of length 1.4 M is 30800 CM . find its total surface area of the cylinder.

Answer 1

Length=1.4m = 140cm
2*22/7*r*70=30800
44*70*r=30800
r=70

TSA=?
2*22/7*70(140+70)
44*10*210
=92400cm
I think. Tell me if i m wrong