Question

The size of a plant cell is $0.00005473$ m. This number can also be written as

• A. $5\cdot 473\times {10}^{-3}$
• B. $5\cdot 473\times {10}^{-5}$
• C. $5\cdot 473\times {10}^{11}$
• D. $5\cdot 473\times {10}^5$

Answer 1

The correct option is B $5\cdot 473\times {10}^{-5}$

$0\cdot 00005473=\frac{5473}{100000000}=\frac{5\cdot 473\times {10}^3}{{10}^8}$
=$5\cdot 473\times {10}^{-5}$