tolong di jawab ya kakak

90-28-28=34
34:2=17

di coba: 28+28+17+17=90cm



alas x tinggi :2
12 x 16 : 2 = 96 cm²

okok Ss

13. L persegi panjang = p x l
= 22 x 14
= 308

14. Keliling = 90
2(p+l) = 90
2 (28 + l) = 90
56 + 2l = 90
l = 17

15. Luas = a x t : 2
= 12 x 16 : 2
= 96