A rectangular swimming pool measuring 10 meters by 6 meters is encircled by a concrete walkway of uniform width 2 meters. What is the area of the walkway alone in square meters?
80 square meters
The area of the pool alone is 10 × 6 = 60 m². Including the 2-meter border on all sides, the total outer dimensions are (10 + 4) by (6 + 4), or 14 by 10 meters, giving a total area of 140 m². Subtracting the pool area yields 140 - 60 = 80 m².
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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