Daily Math Puzzle: 2026-09-01
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2026-09-01
A wildlife rescue drone is searching a perfectly square field, 100 meters on each side, for a lost fawn. The drone starts at corner A, flies directly towards the opposite corner C. Exactly halfway along this diagonal path, it spots a suspicious rustle. To investigate closer, it immediately changes course and flies directly to an adjacent corner B (which shares a side with corner A). After investigating the rustle, it then flies directly back to its original starting corner A. What is the total distance, to the nearest whole meter, that the drone flew during this entire search and investigation maneuver?
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Solution
241 meters — Let the side length of the square field be 's' = 100 meters.
We can label the corners of the square as A=(0,0), B=(s,0), C=(s,s), and D=(0,s).
The drone's flight path consists of three segments:
1. **From A to the midpoint (M) of the diagonal AC:**
The full diagonal AC has a length calculated using the Pythagorean theorem: sqrt(s^2 + s^2) = sqrt(2s^2) = s * sqrt(2).
Since the drone flies exactly halfway along this diagonal, the distance from A to M is (s * sqrt(2)) / 2.
For s = 100m, this distance is (100 * sqrt(2)) / 2 = 50 * sqrt(2) meters.
2. **From midpoint M to adjacent corner B:**
The coordinates of M (the midpoint of AC) are (s/2, s/2), which is (50, 50).
The coordinates of corner B are (s, 0), which is (100, 0).
Using the distance formula (which is derived from the Pythagorean theorem):
Distance M to B = sqrt((100 - 50)^2 + (0 - 50)^2)
= sqrt(50^2 + (-50)^2)
= sqrt(2500 + 2500)
= sqrt(5000)
= sqrt(2500 * 2)
= 50 * sqrt(2) meters.
3. **From corner B back to the starting corner A:**
This is a direct flight along one side of the square.
Distance B to A = s = 100 meters.
To find the total distance flown, we sum these three segments:
Total distance = (A to M) + (M to B) + (B to A)
Total distance = 50 * sqrt(2) + 50 * sqrt(2) + 100
Total distance = 100 * sqrt(2) + 100
Total distance = 100 * (sqrt(2) + 1)
Now, we approximate sqrt(2) as 1.4142:
Total distance = 100 * (1.4142 + 1)
Total distance = 100 * 2.4142
Total distance = 241.42 meters.
Rounding to the nearest whole meter, the total distance the drone flew is 241 meters.
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