" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
maka
r² = L/π
r² = 628 / 3,14
r = √200 cm
= 10√2 cm
2. K = 2 πr
= 2. 3,14 x 10√2
= 62,8 √2 cm²