216/360 = 2πr/2πs
216/360 = r/s
216/360 = r/15
r = 216/360 × 15
= 9
t^2 = s^2-r^2
= 15^2-9^2
= 225-81
= 144
t = √144
= 12
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
216/360 = 2πr/2πs
216/360 = r/s
216/360 = r/15
r = 216/360 × 15
= 9
t^2 = s^2-r^2
= 15^2-9^2
= 225-81
= 144
t = √144
= 12