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We have a sculpture beam from the tree trunk with a rectangular cross-section with dimensions 91 mm and 87 mm. What is the trunk's smallest diameter?

Correct answer:

D =  125.8968 mm

Step-by-step explanation:

a=91 mm b=87 mm  D2 = a2+b2 D=a2+b2=912+872=5 634=125.8968 mm

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