" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
=SxS - 1/4 . phi . r . r
=7x7 - 1/4 . 22/7 . 7 . 7
= 49 - 38,5
= 10,8.
maaf kalo salah