Step-by-step explanation:
1)
a) Wavelength of red light = 700 nm
1 nanometer =

Wavelength of red light in meter will be:

b) Wavelength of red light =

1 meter = 39.3701 inches
Wavelength of red light in inches will be:


2)
Value of distance given = 90.123 km
1 km = 3280.84 feet

1 foot = 0.1515152 chain


Value of distance in chains:
