How can the height of a person who is six feet tall be expressed (approximately) in nanometres?
- A$183 x 10^6$ nanometres
- B$234 x 10^6$ nanometres
- C$183 x 10^7$ nanometresCorrect
- D$234 x 10^7$ nanometres
Explanation
To find the height in nanometres, follow these simple conversion steps:
-
One foot is approximately 30.48 centimetres. Therefore, 6 feet is equal to 6 multiplied by 30.48, which is approximately 183 centimetres.
-
One centimetre is equal to 10 million nanometres, which is 10 raised to the power of 7.
-
By multiplying 183 centimetres by 10 raised to the power of 7 nanometres, we get 183 x 10 to the power of 7 nanometres.
This matches option C.
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