Question

5. An average human hair is approximately 90,000 nm thick. How many cm is that? (1 cm = 1x10^7 nm)

• 9 x 1011 cm
• 9 x 1012 cm
• 9,000 cm
• 0.009 cm

Answer 1

0.009 cm

Step-by-step explanation:

When using a calculator its mostly common sense. One human hair is obviously not 9,000 cm thick, and 9x10^11 or 9x10^12 is way more than 9,000 so it would be 0.009