Hitunglah keliling layang-layang ABCD

L=1/2 x d1 x d2= 1/2 x (15+6) x (8+8) =1/2 x 21 x 16 =168 cm ^2 (^=pangkat)

hypotenusa(sisi miring)1= √8²+6²
=✓64+36
=✓100
=10
hypotenusa2= √15²+8²
=√225+64
=√289
=17
keliling =10+10+17+17
=34+20
=54 cm

semoga membantu