PILNE ! POMOCY ! NA DZIŚ ! ZAŁĄCZNIK ! :) obliczenia !
1. P=6*9*9=81*9=486cm2V=9*9*9=81*9=729cm3to sześcianV=7*5*14=35*14=490cm3P=2*(3*5+5*14+14*3)=2*(15+70+42)=2*127=254cm22.8,64cm2:6=1,44cm1,44cm=1,2cm*1,2cmV=1,2*1,2*1,2=1,728(cm3)1,728cm*50cm=136,4cm3.3dm=30cm70mm=7cmP=2*(30*12+12*7+30*7)=2*(360+84+350)=2*794=1588cm2V=30*12*7=2520cm3* - to znak mnożenianaraziwe mam tylko tyle ;D
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1.
P=6*9*9=81*9=486cm2
V=9*9*9=81*9=729cm3
to sześcian
V=7*5*14=35*14=490cm3
P=2*(3*5+5*14+14*3)=2*(15+70+42)=2*127=254cm2
2.
8,64cm2:6=1,44cm
1,44cm=1,2cm*1,2cm
V=1,2*1,2*1,2=1,728(cm3)
1,728cm*50cm=136,4cm
3.
3dm=30cm
70mm=7cm
P=2*(30*12+12*7+30*7)=2*(360+84+350)=2*794=1588cm2
V=30*12*7=2520cm3
* - to znak mnożenia
naraziwe mam tylko tyle ;D