" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= r2 = 4+1
= 5
Luas O 1 = phi . r²
=3,14 . 4²
=3.14 . 16 = 50,24 cm²
Luas O 2 = phi . (r2)²
= 3,14 . 5²
= 3,14 . 25 = 78,5 cm²
jadi pertambahan luas pemuaian logam adalah
=Luas O 2 - Luas O 1
=78,5 cm² - 50,24 cm²
=28,26 cm²