Flash Education

Question

The length, breadth and height of a cuboidal hole are 40 m, 12 m and 16 respectively. The number of planks having the height of 5 m the breadth of 4 m an the thickness of 2 m, can be kept in that hole is (a) 190 (b) 192 (c) 184 (d) 180

AAAAA Cube and Cuboid

January 1, 2024

Answer

(b) 192

Explanation:

The length, breadth & height of a rectangular hole are 40 m, 12 m & 16 m respectively volume = (40 × 12 × 16) m³.

And the length, breadth & thickness of a rectangular wooden plank are 5 m, 4 m & 2 respectively.

∴ Its volume = (5 × 4 × 2) m³

∴ No. of planks $=\frac{40 × 12 × 16}{5 × 4 × 2}$ = 12 × 16 = 192

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