Why do tools meant for cutting always have sharp edges

1.	Why do tools meant for cutting always have sharp edges
Answer» TION:The smaller the area, larger the pressure on a surface for the same force. This is why tools meant for cutting and piercing ALWAYS have SHARP EDGES. By increasing the area we can ALSO reduce the pressure on a surface for the same applied force.

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Why do tools meant for cutting always have sharp edges ​

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Why do tools meant for cutting always have sharp edges