tolong ya no 8-9 pake cara ya

8. B 13 cm
9. B 25 cm

dicek lagi yaa siapa tau aku salah hitung^^

8. AB = 8, DB = 6
DB = √8^2+6^2
DB = √100 = 10

TT' = 12, T'B = 1/2DB = 5
TB = √12^2+5^2
TB = √169 = 13cm

9. Keliling = 2(P+L)
70 = 2 ( P+L )
35 = P + L

P : L = 4 : 3
• P = 4/7 x 35 = 20 cm
• L = 3/7 x 35 = 15 cm
panjang diagonal = √20^2+15^2
PD = √625
PD = 25cm

Semoga Membantu :))