Pada layang layang ABCD diketahui pajang AB=20 cm , BC= 13cm, dan diagonal bd=24 cm luas layang layang ABCD adalah

diagonal ao^2 = 20^2 - 12^2
diagonal ao^2 = 400 - 144 = 256
Diagonal ao = 16

diagonal co^2 = 13^2 - 12^2
diagonal co^2 = 169 - 144 = 25
Diagonal co = 5

d1 = 24, d2 = 16 + 5 = 21

Luas layang2 = 1/2 × 24 × 21 = 525 cm^2