can someone help me with problems 12, 13, 16, and 17 please!!

12) 

Work:

Part A of 12)

71.5% of 1378

71.5% = 0.715

0.715 * 1378

x =  985.27

The Eiffel Tower is 985.27 ft. tall. 

Part 2 of 12)

Motherland Statue Work:

19.6% of 1378

19.6% = 0.196

0.196 * 1378

= 270.088

The Motherland Statue is 270.088 ft. tall.

13) 

Canada's Water Area Work:

water area/total area

755,170/9,976,140 

= 0.0756976145*100 = 7.56976145

= about (to the nearest tenth percent) 7.6%

x=7.6%

7.6% of Canada is water. 

14)

30 is 12.5% of what #? 

12.5%= 0.125

30/0.125

=240

x=240

30 is 12.5% of 240