Answer: 103.0776 km/hr approximately
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Work Shown:
Use the pythagorean theorem.
a^2 + b^2 = c^2
c = sqrt(a^2 + b^2)
c = sqrt(100^2 + 25^2)
c = 103.077640640441
c = 103.0776
This result is approximate. Round however you need to.
The diagram is shown below.
