I really need help with this!
I have to calculate the surface area of a circle to molecules per layer, which requires converting the surface area from meters to nanometers.
My surface area is 12.56 cm2, which equals 0.12560 meters & 125600000 nm. I'm given: (I have to multiply everything across the top row to give the molecules and everything across the bottom to get the top layer)

12.56 cm2 * 1 m2 * 1 x 10^18 x 1 molecule = ___
The bottom row is:
Top layer surface area * 10,000 cm2 * 1 m2 * 0.210 nm2 = ___
Then I have to find molecules/top layer
Can anyone help me please???

Question

I really need help with this! 
I have to calculate the surface area of a circle to molecules per layer, which requires converting the surface area from meters to nanometers. 
My surface area is 12.56 cm2, which equals 0.12560 meters & 125600000 nm. I'm given: (I have to multiply everything across the top row to give the molecules and everything across the bottom to get the top layer) 

12.56 cm2 * 1 m2 * 1 x 10^18 x 1 molecule = ___
The bottom row is: 
Top layer surface area * 10,000 cm2 * 1 m2 * 0.210 nm2 = ___
Then I have to find molecules/top layer
Can anyone help me please???