Ihave 29hundreds, 9 tens, 7 ones, 9 tenths, and 9 hundredths. what number am i

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

Plz me plzzzzzzz i need and plz delte this after answer

Solve 3x-18=2y and 5x-6y=6 by elimination show work