How do i find the are of this figures?

2.  10 x 6 = 60          6 x 6 / 2 = 18      18 + 60 = 78      78 u³
3. 5 x 5 = 25           25 x 6 = 150         150 u³
4. 1 x 1 = 1         1 x 8 = 8       8 u³
5.  10 x 8 = 80           80 u³
6. 10 x 12 = 120         120 u³
7.   2 x 2 = 4       4 x 6 = 24         24 u³
8.  1 x 3 = 3        4 x 8 = 32    32 - 1 = 31      31 + 3 = 34      34 u³
9. 9 x 5 = 45       4 x 5 = 20       20 + 45 = 65      65 u³
Hope this helps!

Here’s the answer. you’re supposed to use 2900 times the interest rate and then add your original amount of money. now you get 2997.15