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Mathematics 21 Online
OpenStudy (anonymous):

A standard mailbox is 6 inches wide, 19.55 inches long and 7 inches tall. The mailbox is constructed from a rectangular prism and half a cylinder. A standard letter with envelope has dimensions of 6.125 inches high, 11.4 inches long, and .25 inches thick. What is the maximum amount of letters that can fit into the mailbox?

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