Solar energy - A
nuclear energy - B
fossil fuel energy - C
wind energy - D
geothermal energy - E
It is gravity¿ what is the question?
Answer:

Part 1

Part 2

Explanation:
Given that
Diameter,d=1 μm
Length ,l=2 μm
As we know that volume of cylinder given as



Surface area,A
A=π d l


Part 1

Part 2
