A.) 591.7 v B.) 991.7 v C.) 59.7 % D.) 47.9 kW E.) 247925 W F.) 59.7 %
% area reduction==PR=0.734=73.4%. % elongation=EL=0.42=42%. Explanation: Given do=12.8 mm, df=6.60 mm, Lf=72.4 mm, Lo=50.8 mm. The % area reduction is calculated using the formula % reduction in area = ((π*(do/2)²)-(π*(df/2)²))/(π*(do/2)²). Substituting the values yields % area reduction=73.4%. For % elongation, use the formula EL=((Lf-Lo)/Lo)*100, resulting in % elongation=((72.4-50.8)/50.8)*100=42%.