" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r = 1/2 D
r = 1/2 x 140cm
r = 70cm
π r² = Luas lingkaran
22/7 x 70 x 70 = 15.400 cm²
= 22/7.(140/2)²
= 22/7.70²
= 22/7.4900
= 15400