6x5 gives greatest area
Just think of the factors of 30, and list them in pairs for the others.
Alice purchased 30 decorative stone square blocks to create an enclosed rectangular garden area. Each square block measures 1 foot by 1 foot, and one possible arrangement is shown. Including the arrangement shown, in how many distinct ways can Alice arrange the blocks to enclose a garden, and for which arrangement is the garden area greatest?
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