D C B A
3 : 1
3 : 2
----------------------
30cm2 9u : 6u : 2u <-- Hope u know why I had to do this
/ \ / \
5u 4u 4u 2u
Notice that B can be broken up into A and part of C
And C can be broken up into D and part of B
5u --> 30 cm2
1u --> 30/5 = 6 (cm2)
WXYZ --> 30 + 17x6 = 132 (cm2)
Or WXYZ --> 22x6 = 132 (cm2)
