Question

aflati aria totala a unui paralelipiped dreptunghic cu o latura a bazei de 4cm , aria bazei de 24cm la patrat si volumul de 168cm la cub

Answer 1

Abaza=24 cm²    ⇒ latura₂ =24:4=6 cm
V=168 cm³    ⇒ inaltimea=168:24=7 cm
Pbaza=2×(4+6)=20
Atotala=Alaterala+2×Abaza=Perimetrul×h+2×Abaza=20×7+2×24=140+48=
=188 cm²

Answer 2

Ab=24=4x ⇒ x=6cm o latura si 4cm cea de-a doua latura
V=Abxh=24h=168 ⇒ h=168/24=7cm
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At=2Ab+Alat= 2x24 +(4+6+4+6)x7 = 48+140 = 188cm^2
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