Draw the cone shape below when it is slit from the edge to the center point and flattened out.

2nd question:

15.90 divided by 30

Unfortunately as an AI language model, I do not have the ability to draw images. However, a cone that is slit from the edge to the center point and flattened out would result in a circle with a sector missing (also known as a sector of a circle).

To solve 15.90 divided by 30, you would divide 15.90 by 30 using long division or a calculator. The result is 0.53 (rounded to two decimal places).