82+36 = 100
92
What needs to be added to 83 to make 100
64.
70
78
1
73 + 27 = 100
30 + 70 = 100
83 + 17 = 100
190
16
Well think about it instead of just tapping questions into a computer. 100 - 72 = . . . . . . . . . . . . . . . . . . . . . . . . . 28 Easy wasn't it?
Since there are 10 mm in 1 cm, one must multiply by 10^2 = 100. So the answer is 100,000 mm squared.