V=Pp*h
Pc=2Pp+Pb
Pp=a²
Pb=4ah
a=5 cm
h=?
Pp=5²
Pp=25 cm²
276=2*25+4*5*h
276=50+20h
20h=276-50
20h=226
h=11,3 cm
V=25*11,3
V=282,5 cm³
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V=Pp*h
Pc=2Pp+Pb
Pp=a²
Pb=4ah
a=5 cm
h=?
Pp=5²
Pp=25 cm²
276=2*25+4*5*h
276=50+20h
20h=276-50
20h=226
h=11,3 cm
V=25*11,3
V=282,5 cm³