Jawab nomor 1,2dan , 5 aja kak yg benar jangan asal
Nomor 1
kll = 10 + 10 + 12 = 32 cm (10 dihasilkakn karena segitiga sama kaki)
luas = √10² – 6² = √64 = 8cm t
luas = a t / 2
luas = 6 . 12 / 2
luas = 48cm²
Nomor 4
36 = (x + 7) + (x + 4) + ( x + 1)
36 = 3x + 12
36 -12 = 3x
24 = 3x
24/3 = x
8cm = x
Sisi AB
(x + 4) =
8 + 4 = 12cm