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Mensuration – II (Volumes and Surface Areas of a Cuboid and a Cube) — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSMensuration – II (Volumes and Surface Areas of a Cuboid and a Cube)2 Marks
Question
Find the volume of a cube whose surface area is: $150\ cm^2$
✓

Answer

Surface area of a cube $= 150 \ cm^2$
$\therefore$ Edge $(a) =\sqrt{\frac{\text{S}.\text{A}}{6}}=\sqrt{\frac{150}{6}}\text{m}$
$=\sqrt{25}=5\text{cm}$
$\therefore$ Volume $= a^3= (5)^3m^3= 125\ cm^3$


 

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