Home » Test Prep » PSAT Test » What is the straight line distance from Jeff’s work to his home?
In order to get to work, Jeff leaves home and drives 4 miles due north, then 3 miles due east, followed by 6 miles due north and, finally, 7 miles due east. What is the straight line distance from Jeff’s work to his home?
A. 11
B. 2√5
C. 15
D. 10√2
E. 6√2
Correct Answer: D
Explanation/Reference:
Explanation:
Jeff drives a total of 10 miles north and 10 miles east. Using the Pythagorean theorem (a2 + b2 = c2), the direct route from Jeff’s home to his work can be calculated. 102 + 102 = c2. 200 = c2. √200 = c √100√2 = c. 10√2 = c
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