" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
126 phi = 2 × phi × r × 10,5
126 = 21 r
r = 6cm
luas alas :
= phi × r^2
= 3,14 × 6 × 6
= 113, 04 cm