Mensuration Practice Test 9

Volume of the cuboid = l × b × h
= 7 × 6 × 5 = 210 $\mathit{c}{\mathit{m}}^3$
Volume of the cube = ${\mathit{a}}^3$ = 2 × 2 × 2 = 8 $\mathit{c}{\mathit{m}}^3$
Total number of wooden cubes that can be cut
= $\frac{210}{8}$ = 26.25
= $\frac{210}{8}$ = 26.25
So 26 smaller cubes can be cut from a cuboid.
Volume of 26 cubes = 208 $\mathit{c}{\mathit{m}}^3$
Wood wasted = 210 - 208 = 2 $\mathit{c}{\mathit{m}}^3$
Percentage = $\frac{2}{210}\times 100$ = less than 1%