Chapter 12, Problem 14A

The length, L, of the point on any standard 82° included angle drill can be calculated using the formula L = 0.575∅ , where ∅ represents the diameter of the drill. Determine the lengths of the following drill points with the given diameters. Round to 3 decimal places for inches and 1 decimal place for millimeters.
a. $\frac{1\text{'}\text{'}}{2}$
b. $\frac{1\text{'}\text{'}}{4}$

c. $\frac{3\text{'}\text{'}}{8}$
d. 10 mm
e. 25 mm
f. 45 mm