6 sides, 7 length for one side
6x7 = 42 for the first one
52 for one side, has 5 sides
52x5 = 260 for the second.
Hello, hope this makes some sense, the midpoint formula is what’s given in the picture and the rest is just substitution
Answer:
Volume of the cone = 
Step-by-step explanation:
Height of the cone = 
Radius of the cone = 
Volume of a cone is:

As, 
Volume is:

The volume of the cone is: 
18+3x=-10+x
3x-x=-10-18
2x=-28
x=-14