Question

why do all cutting instruments have sharp edges? ​

Answer 1

Answer: The cutting edges of tools like blades, knives etc., are provided with sharp edges to cut the things easily as the sharp edges has small area on which the force is applied, hence more pressure is applied.

Answer 2

Answer:

They have shrap edges means Area is small so,then the pressure will be More . Less area , More pressure.

so, it will be easier to cut.