Proszę pomóżcie Na teraz! Daję naj. ;)

[latex]Pp = frac{(a+b)*h}{2} = frac{(8+12)*8}{2} = (8+12)*4 = 20 * 4 = 80 cm^{2} [/latex] [latex] 1dm^{2} = 100cm^{2} \ xdm^{2} = 80cm^{2} \ 1*80 = 100 * x \ 100x = 80 /:100 \ Pp= x = 0,8dm^{2} [/latex] [latex]V = Pp*h \ h =20cm=2dm \ Pp = 0,8dm^{2} \ V = 2dm* 0,8dm^{2} =1,6dm^{3} [/latex]