Question

Four cubes with edge $6cm$ and three cubes with edge $8cm$ were filled with a liquid. Find the total volume of the liquid in litres.

• A. $1.2$ litres
• B. $2.4$ litres
• C. $2.6$ litres
• D. $4.8$ litres

Answer 1

The correct option is B $2.4$ litres

Edges of the cubes are $6cm$ and $8cm$

Volume of cubes $=a^3$

Volume of cubes with edge $6cm$ $=6^3=216c{m}^3$

Volume of cubes with edge $8cm$ $=8^3=512c{m}^3$

Also, $1000c{m}^3=1$ litres

$\therefore$ Total volume $=4\times 216+3\times 5122400c{m}^3=2.4$ litres