Question

Calculate the volume of the cuboid on top if the volume of the composite shape is
800 cu units.

• A. 600 cu units
• B. 300 cu units
• C. 200 cu units
• D. 100 cu units

Answer 1

The correct option is C 200 cu units

Volume of the cuboid at the bottom
= $15\times 8\times 5$
= 600 cu units

Volume of the entire solid
= 800 cu units

But, volume of the entire solid = volume of the cuboid on top + volume of the cuboid at the bottom.

$\therefore$ 800 cu units = Volume of the cuboid on top + 600 cu units

$\therefore$ Volume of the cuboid on top
= 800 cu units - 600 cu units
= 200 cu units