tugas pkti 2a

https://docs.google.com/viewer?a=v&pid=gmail&attid=0.1&thid=12ec4b8ea81a8c17&mt=application/vnd.ms-excel&url=https://mail.google.com/mail/?ui%3D2%26ik%3Df501aa5f22%26view%3Datt%26th%3D12ec4b8ea81a8c17%26attid%3D0.1%26disp%3Dattd%26realattid%3Df_gldwzo7o0%26zw&sig=AHIEtbQiqIBz2MScGdCXZRzHxFtk9jDYHA&pli=1