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Pp=a×h÷2
h=a√3÷2
h=10√3÷2
h=5√3cm
Pp=10×5√3÷2
Pp=25√3cm²
V=25√3×10
V=250√3cm³
2.prostopadłościan
V=abc
a=1
b=5
c=7
V=7×5×1
V=35j³
O podstawie trójkąta
V=PpH
Pp=a×h÷2
h=a√3÷2
h=5√3÷2
h=2,5√3
Pp=5×2,5√3÷2
Pp=6,25√3
V=6,25√3×5
V=31,25√3j²
o podstawie trapezu
V=Pp×H
Pp=(a+b)÷2×h
Pp=(2+8)÷2×4
Pp=20j²
3²+h²=5²
9+h²=25/-9
h²=16/√
h=4
V=20×6
V=120j²