A 6.00 ft by 8.00 ft bookcase is to be built. It has horizontal shelves every foot. A support is to be notched in the shelves diagonally from one corner to the opposite corner. (Round your answers...

A 6.00 ft by 8.00 ft bookcase is to be built. It has horizontal shelves every foot. A support is to be notched in the shelves diagonally from one corner to the opposite corner. (Round your answers using the rules for working with measurements.)

At what point should each of the shelves be notched?

A=   ft

B=   ft

C=   ft

D=   ft

E=   ft

How long (in ft) is the crosspiece?