" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Luas juring ROS = 90/360 x 22/7 x 7 x7 = 38,5cm²
sudut ROS = 90
D = 14, maka R = 7
maka :
90/360 = luas juring / 22/7 x 7²
luas juring = 90/360 x 22/7 x 49
= 1/4 x 22/7 x 49
= 38,5 cm²