SOLUTION: a rectangle box is 7cm wide, 7 cm tall, 8 cm long. What is the diameter of the smallest circular opening trough which the box will fit?

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Question 1072412: a rectangle box is 7cm wide, 7 cm tall, 8 cm long. What is the diameter of the smallest circular opening trough which the box will fit?
Found 2 solutions by Alan3354, math_helper:
Answer by Alan3354(69443) About Me  (Show Source):
Answer by math_helper(2461) About Me  (Show Source):
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The diagonal length of the box (7cm x 7cm side) must fit into the diameter of the circular opening.
Let d=minimum diameter
+2r+=++d+=++sqrt%287%5E2+%2B+7%5E2%29+
++d+=+7%2Asqrt%282%29+
+d+=+9.9cm+ (approx.)

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