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I am attempting to 3D print a bowl to eat my morning cereal out of. The 3D print

ID: 3120722 • Letter: I

Question

I am attempting to 3D print a bowl to eat my morning cereal out of. The 3D printer I am working with can print any object in 3-space that 1 can describe with a collection of inequalities. I'm very particular about my cereal bowls, and want a bowl that has a flat base, a height of 8.5 cm, perfectly hemispherical sides with the diameter of the top of the bowl 18 cm, and a side thickness of 1 cm. Sketch a figure. What collection of inequalities should I input into the 3D printer in order to print a bowl to my specifications? (Suppose that the origin for the printer is the very' center of the bottom of the bowl.)

Explanation / Answer

Let the height be represented by the variable z as the height is 8.5 cm

=> z <= 8.5

the inner radius of the bowl will be = 8.5 - 1 = 7.5 cm

r <= 7.5

and the thickness is = 1 cm

so enter t = 1

the base is a flat plate which is square in shape and its dimensions are as follows:

as the height is 8.5 cm and the radius of the top is 9 cm so the side of the plave wil be = sqrt(81 - 72.25 ) = sqrt(8.75)cm

=> the inequalities are as follows :

diameter d <= 9

height z <= 8.5

thickenss of the bowl t = 1

bottom plate dimensions : sqrt(8.75)*sqrt(8.75)*(.5)

base plate tickwhess is = .5 cm