Ak(d) = 1 - e^{- k·d}
2.1.
A(8) = 1 - e^{- k·8} = 0.8 --> k = 0.2012 1/cm
A(d) = 1 - e^{- 0.2012·d} = 0.99 --> d = 22.89 cm
2.2.
A1.62(5) = 1 - e^{-1.62·5} = 0.9996964608
A0.15(d) = 1 - e^{-0.15·d} = 0.9996964608 --> d = 54.00 cm
Die Bleiplatte kostet: 51·1.6 = 81.60 €
Die Aluminiumplatte kostet: 54/5·12.13·1.5 = 196.51 €