" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a = 2
r = 2sin²60 / 2 = sin²60 = (1/2 √3)² = 3/4
S~ = a/(1 - r) = 2/(1 - 3/4) = 2 / (1/4) = 8