(1) 3.
5
5
(6)
5
ㅋ
1212
49
=
+
(7)
(3)
2
5
$ +
2
5
(8)
+
9
3
(4)
+ 1
(9)
+
2
11
7
4
(5)
2
7
(10)
+
7​

Orla and eduardo each looked at a strand of their hair under a microscope and measured the diameter. orla's strand was 0.005\,\text{cm}0.005cm in diameter, and eduardo's strand was 0.012\,\text{cm}0.012cm in diameter.