cut
A pill cutting tool with a very sharp razor blade.
they used sharp rocks the shape the tool or weapon
make an opening, incision, or wound in (something) with a sharp-edged tool or object.
Adze.
cause a dull tool hurts more if it stabs you and a sharp tool is fast and slick going threw you.
You should know the angle of the cutting tool. You can use emery sharp cutting tool.
You can make a sharp object in the wild by finding a suitable rock or stone and striking it against another hard surface, like a large rock, to shape it into a sharp edge. You can also use the edge of a shell or a piece of glass to create a cutting tool. Just remember to be cautious and handle sharp objects with care to avoid injury.
reamer
chisel is when you would use a chisel, (a tool), to carve any shape or whatever out. carving is when you you use any carving tool to get a shape.
The best tool for cutting drywall is a utility knife with a sharp blade.
knife
To find the area, first divide the shape into regular, simple shapes. Then use formulas to find the area of the smaller, regular shapes. Lastly, add up all the smaller areas to find the area of the original shape.