Tolong ya plissssssssss binggo

luas=diagonal1 x diagonal2 :2
126=14* d2:2
126*2=14*d2
d2=252/14=18 cm

11. L trapesium
= 1/2 (atas + bawah) dikali tinggi
= 1/2 [12cm +(6+12+6)] dikali 8cm.
= 1/2 (12cm + 24cm) dikali 8cm
= 1/2 (36cm dikali 8cm)
= 1/2 288 = 288/2 = A.144cm.

12. d2= 2L/d1
= 2 dikali 126cm2/14cm
= 252/14 = C.18cm

Maaf,gak bisa jawab no.13
Maaf kalau salah!
Semoga membantu!!!