jawab sebisa kalian yas

AE^2 = 13^2 - 12^2
= 169 - 144
= 25
AE = √25
= 5

CF = √15^2 - 12^2
=√225 - 144
=√81
= 9

AB = 5 + 12 + 9
= 26 cm

maaf cuma nomor 10 yg dijawab^