How many planks of size 2 m x 25 cm x 8 cm can be prepared from a wooden block 5 m long, 70 cm broad and 32 cm thick, assuming that there is no wastage?
We know that,
Volume of cuboid = Length × Breadth × Height
Therefore,
Total volume of the block = (500 × 70 × 32)
= 1120000 cm3
Total volume of each plank = 200 × 25 × 8
= 40000 cm3
Hence,
Total number of planks that can be made = 
= 
= 28 planks
8