The maximum number of 4m 50 cm 20 cm slabs that may be stored in a 16m long, 12m wide, and 4m deep trench is:
Answer & explanation
Correct answer: option 4
We know that,
Volume of the plank = length × width × thickness
Given,
length of the plank = 4 m
Width of the plank = 50 cm = 0.5 m
Thickness of the plank = 20 cm = 0.2 m
Volume of the plank = 4 × 0.5 × 0.2 = 4 m³
Given, length of the pit = 16 m
Breadth of the pit = 12 m
Height of the pit = 40 m
Volume of the pit = 16 × 12 × 40= 7680 m³
Number of planks that can be stored in the pit = = \(\frac{7680 }{4}\) = 1920