sama cara nya ,total hasil nya tolongya

p = 8 m
l = 5 m
t = 3 m
Biaya = 60.000/m persegi

Luas balok = 2 x {(p x t) + (l x t)}
L= 2 x {(8 x 3)+(5x3)}
L=2x{24+15)
L=2x(39)
L=78m persegi
jadi total biaya = 60.000 x 78 = 4.680.000 rupiah





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