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ABCDA'B'C'D' -paralelipiped dreptunghic AB= 2 RAD 2 CM,AD=1CM SI AA' = 4 cm .Aflati : a)At=? b) V=? c)d=? d)ARIA ACC'A'


Răspuns :

a) At=2(L.l+L.h+lh)=2(2√2+8√2+4)=2(10√2+4)=4(5√2+2) cm²
b) V=Ab.h=2√2.4=8√2 cm³
c) d=√(8+1+16)=√25
d=5 cm
d) 
AC²=AB²+BC²
AC²=8+1=9
AC=3 cm
A(ACA`C`)=3.4=12 cm²