How to make 16cm2 How to make 24cm2
16 by 1, 8 by 2, 4 by 4 1 by 24, 12 by 2, 3 by 8, 6 by 4
How to make 30cm2 how to make 40cm2
1 by 30, 2 by 15, 10 by 3, 6 by 5 1 by 40, 2 by 20, 4 by 10, 5 by 8
How to make 36cm2
1 by 36, 2 by 18, 4 by 9, 6 by 6