" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= 1/4 πr² - 1/3 a × t
= 1/4 (3,14) (10)² - 1/3 (10) (10)
= 78,5 - 33,3
= 45,2
sekitar 45,2 cm²