A two-dimensional object is called a shape, and a three-dimensional object is known as a .

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Step-by-step explanation:

: A two-dimensional object is called a shape, and a three-dimensional object is known as a form

To do answer this question you would take paul's time and divide it in half getting 9 hours then do the same for matt getting 11 then you add the two getting 20 hours and then divide that by two getting 10 hours  so all in all it would take matt and paul 10 hours to install the floor together