Question

How many planks each of which is 2 metre long, 3 cm board and 4 cm thick.
Can be cut-off from a wooden block 6 cm long, 18 cm broad and 44 cm
thick.

Answer 1

VOLUME OF PLANKS = Length×Breadth×Height

= 200×2.5×4 = 2000CM³

VOLUME OF WOODEN BLOCK =

Length×Breadth×Height

= 600×15×40 = 360000CM³

NUMBER OF PLANKS = VOLUME OF WOODEN BLOCK/VOLUME OF EACH PLANKS

= 360000/2000 = 180

Answer= 180