" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= 2 x π x r
= 2 x (22/7) x 49
=308
panjang lintasan
= keliling x banyak putaran
= 308 x 400
= 123.400 cm
= 1, 234 km