Question

how many wooden cubical blocks of edge 20 cm can be cut from a log of wood of size 8 cm by 5m by 80 cm, assuming there is no wastage.

Answer 1

At first find the volume of sudden log = 8*500*80 i.e 320000 cm cube.
Then find area of wooden cubical log =20*20*20 i.e 8000 cm cube .
so no. of cubical log = 320000/8000
= 40
40 cubical log can be cut out from this piece of wood.