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# Math Problem Help?

Amy has a pen 17cm long that she wants to send as a gift to a friend. She finds a rectangular box in which the pen just fits. Both the length and the width of the box are 12 cm. What is the height of the box?

### 1 Answer

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- oldschoolLv 73 months agoFavorite Answer
We know the pen is the hypotenuse of a triangle with base² = 12²+12² = 288

17² = 288+h²

h² = 17²-288 = (1cm)² so the box has height 1cm assuming the pen width can be ignored.

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