Joan has a stalk of celery that is 6 inches long. she cuts it into two pieces. each piece is the same length. how long is each piece.

For your Joan question, do 6÷2=3. Each piece is 3 inches long.
For the pic, do 14÷2=7. Since one is 2 inches wider, add 2 to one trophy and subtract 2 from the other (so it's still 14in). Your answer is 9 inches.

Part A: Square, since it's a square pyramid, and you cut the tip off horizontally, and look down at what you've created, you see a square.

Part B: Triangle, because if you cut vertically through the middle, if you actually just looked at the square pyramid on the side, you would see a triangle.