Cleave Books Pentominoes Spacefilling Problems 2
4. 
On the right is shown how 6 pentominoes can be put together to make a 5 by 6 rectangle.
Use the other 6 pentominoes from the full set of 12, to make another 5 by 6 rectangle. 

5. 
Use the I, N, T, V, W, Y and Z pentominoes to make a 5 by 7 rectangle.
Then use the other 5 pentominoes from the full set of 12, to make a square. 

