Răspuns:
a) Aria laterală=Pb×h=(2l+2L)×h=(20+15)×4=35×4=140 m²
Aria totală=2Ab+Al=2×L×l+140=2×10×7,5+140=150+140=290 m²
b) V=Ab×h=150×4=600 m³
c)Corpul este un paralelipiped dreptunghic
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Răspuns:
a) Aria laterală=Pb×h=(2l+2L)×h=(20+15)×4=35×4=140 m²
Aria totală=2Ab+Al=2×L×l+140=2×10×7,5+140=150+140=290 m²
b) V=Ab×h=150×4=600 m³
c)Corpul este un paralelipiped dreptunghic