What is the diameter of a hole drilled with a 0.3125-inch drill?

The diameter of a hole drilled with a 0.3125-inch drill corresponds to the measurement of 11/32 inches. When converting decimal inches to fractions, it's important to recognize that 0.3125 can be represented as a fraction.

To convert 0.3125 to a fraction, you can recognize that 0.3125 is equivalent to 3125/10000. This fraction can be simplified by finding the greatest common divisor (GCD) of the numerator and the denominator, which in this case is 3125, leading to the simplified form of 11/32. Therefore, the correct answer, reflecting the diameter in fractional inches, is 11/32.

While the other options offer different fractional measurements, they do not equate to 0.3125 inches. 5/16, for example, is 0.3125 when expressed as a decimal, but it’s crucial to understand that 5/16 is not equivalent to 11/32 in this context.