a) V=L x l x h
V=6x5x10=>V=300cm^3 = 0.3l
b)Aria laterala=2(Lxh+lxh)
=>Al=220cm^2
Aria bazei=30cm^2
Aria totala=220+ 2x30
=>At=280cm^2
10/100 x 280 = 28
=> Aria suprafetei de material necesar=280+28=308cm^2
c)MS^2=AM^2+AS^2
MS^2=10^2+7.5^2
MS^2=100+56,25
MS^2=156,25
MS=radical din 156,25=>MS=12,5cm