Răspuns :
se inmultesc gradele, minutele si secundele cu 3
13"*3=39
21'*3=63'= 1grad si3'
41 grade*3=123 grade
123 grade +1 grad +3'+39''=124 grade3'39"
13"*3=39
21'*3=63'= 1grad si3'
41 grade*3=123 grade
123 grade +1 grad +3'+39''=124 grade3'39"
=123 grade 63 minute 39 secunde= 124 grade 3 minute 39 secunde