tolong ya kk di bantu terim kasih no 7

a. KL = 15+9 = 24 cm
b. 15+15+24+24 = 78 cm
c. 24x12 = 288 cm^2

A.

KL = ?

PL = 12 ÷ 4 = 3
PL = 3 × 5 = 15 (pakai perbandingan)

QM = 15^2 - 12^2
QM = 225 - 144 = 81 = 9

PL = NQ

NM = 15 + 9 = 24
NM = KL = 24


B.

Keliling jajargenjang :

24 + 24 + 15 + 15 = 78


C.

Luas Jajargenjang :

24 × 12 = 288