question_answer

A teak wood log is first cut in the form of a cuboid of length 2.3 m, width 0.75 m and of a certain thickness. Its volume is \[1.104\text{ }{{m}^{3}}\]. How many rectangular planks of size \[2.3\text{ }m\times 0.75\text{ }m\times 0.04\text{ }m\]can be cut from the cuboid?

A)  16                   

B)  64                   

C)  68                   

D)         4

Correct Answer: A

Solution :

        Let the thickness of the log be metres. Since, volume Since the length and breadth of each rectangular plank is the same as that of the cuboid. No. of rectangular planks