Question

3cm =...............nm​

Answer 1

Answer:

30000000 nm

Explanation:

3cm= 30000000 nm

Answer 2

first turn the cetimetre to metre

3cm=3×10^-2 m

Then turn metre to nano metre

3 × 10^-2 m= 3×10^+9 nm.

so the answer is 3×10^7