" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
r= 8cm:2
r=4cm
l=8cm
Pb= π × 4cm x 8cm
Pb= 32πcm²
P=π×4×8
P=32π
P≈32×3.14
P=100.48