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1) The meter to km conversion = 103, therefore:
m2 to km2 = 106
Since the conversion goes small unit (meter) to larger unit (km), we must make the sign on the exponent be negative, hence 10¯6.
This means 4.26 x 104 m2 = 4.62 x 10¯2 km2
This creation of the negative can be seen in the following set-up which uses techniques explained previously:
2) The fm to cm conversion = 1013, therefore:
fm2 to cm2 = 1026
Since the conversion goes small unit (femtometer) to larger unit (centimeter), we must make the sign on the exponent be negative, hence 10¯26.
3.20 x 1010 fm2 x (1 cm2 / 1026 fm2) = 3.20 x 10¯16 cm2
3) no answer provided