" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
R = 13 cm
r = 1/2×16 cm
r = 8 cm
l² = p² - (R-r)²
l² = 26² - (13-8)²
l² = 676 - 5²
l² = 676 - 25
l = √651 cm