A bookcase is 3 feet high and 3 feet wide. Two braces are going to be built to diagonally cross the back of the case. How long is the piece of wood that is needed to build each brace ?

A) 3√3 feet

B) 3√2 feet

C) 3 feet

D) 6 feet

E) 9 feet

macabresubwoofer Nov 5, 2019

#2**0 **

*A bookcase is 3 feet high and 3 feet wide. Two braces are going to be built to diagonally cross the back of the case. How long is the piece of wood that is needed to build each brace ?*

Each diagonal forms the hypotenuse of a right triangle. I would use the Pythagoras Theorem to determine its length. Draw it on paper if you need to.

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Guest Nov 5, 2019