Tolong dijawab yh pake caranya?

7) L = a x t
48 = a x 8
6 cm = a

8) k = 12 + 15 + 8 = 35cm

9) k = 12 x 2 + 8 = 32 cm

10) kl = 50 - (15 x 2)
= 20 cm

11) k = 20 x 3 sisi = 60 cm

12) L = a x t / 2
= 16 x 10 / 2
= 80 cm pangkat 2

13) L = a x t / 2
= 32 x 24 / 2
= 384 cm pangkat 2

semoga membantu kakak....