" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Keliling = 2 × (phi) × ra. r = 7 cm
K = 2 × (22/7) × 7
K = 2 × 22
K = 44 cm
b. r = 14 cm
K = 2 × (22/7) × 14
K = 2 × 22 × 2
K = 88 cm