The drawing on the right shows how 4 pentominoes have been put together to make a copy of the Z-pentomino which is 2 times bigger in its dimensions than the original.
(Note that it is 4 times bigger in area.)

8.

Choose 4 pentominoes to make a twice-size copy of either the F, I, L, N, P, T, U, W, or Y pentomino.
Note the V and X cannot be done.