Medium
The picture shows a stick just fitting into a rectangular box with dimensions 2 cm, 3 cm and 6 cm (the stick runs along the space diagonal of the box). What is the length of the stick?
Explanation
Explanation
The stick represents the space diagonal of the rectangular box, calculated as the square root of (2 squared + 3 squared + 6 squared) = square root of (4+9+36) = square root of 49 = 7 cm.
PRO TIP
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