The information given represents lengths of sides of a right triangle with c the hypotenuse. find the correct missing length to the nearest hundredth. a calculator may be .

a = 20, b = 28, c = ?

a.34.41

b.35.45

c.35.88

d.34.72

The correct answer for the question that is being presented above is this one: "A.34.41." The information given represents lengths of sides of a right triangle with c the hypotenuse. 

h^2 = a^2 + b^2
c^2 = 20^2 + 28^2
c^2 = 400 + 784
c^2 = 1184
c = 34.41

The scale factor of what ?