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Circonferenza $\small c= r·2\pi = 14×2\pi = 28\pi\,m;$
area di base $\small Ab= r^2·\pi = 14^2×\pi = 196\pi\,m^2;$
area laterale $\small Al= c·h = 28\pi×8 = 224\pi\,m^2;$
area totale $\small At= Al+2Ab = (224+2×196)\pi = (224+392)\pi = 616\pi\,m^2.$
Sb=14^2pi=196pi Sl=28pi*8=224pi m2 St=2*196pi+224pi=616pi m2