Final answer:
The decimal inch equivalent of 13/16" is 0.8125 inches, and to convert this to millimeters, we multiply by 25.4 to get 20.6375 mm. The correct answer is A) 0.8125 inches, 20.6375 mm.
Step-by-step explanation:
The student is asking for the decimal inch and metric equivalent of 13/16". To find the decimal inch, we simply convert the fraction to a decimal. The decimal equivalent of 13/16 is determined by dividing 13 by 16, which equals approximately 0.8125 inches.
Next, to convert inches to millimeters, we use the conversion factor given: 1 inch equals 25.4 millimeters. Therefore, to find the metric equivalent, we multiply the decimal inches by 25.4. So, 0.8125 inches times 25.4 equals 20.6375 millimeters.
Thus, the correct answer is A) 0.8125 inches, 20.6375 mm.