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There are infinitely many possible answers. Select any number, B, in the interval (0, 19.5) cm or allow 19.5 cm if a square is permitted. Let L = 39 - B cm. Then the perimeter of an L*B rectangle is2*(L + B) = 2*(39 - B + B) = 2*39 = 78 cm.


Since the choice of B is arbitraty within that interval, there are infinitely many possible values for B and thus, infinitely many possible dimensions.


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9y ago

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