the volume of the pyramind is 78 cubic cm,find the volume of the cone

Answer:
1. 26 cubic cm
2. 12 cubic cm
3.
4.
Prism: 136.5 m³
Step-by-step explanation:
For numbers 1 & 2, just divide it by 3.
For number 4 Prism Part, Multiply it by 4.
I can't answer number 3 and 4's Sphere Part cause Circles are my weakness.