Teman bantu ya jangan lupa pakai caranya bagi yang ga bisa ga usa jawab dan saya butuh fast respon owkey no 4.a,b,c,d&5 jangan lupa pakai cara loh

4 . A . luas = 1/2 × d1 × d2
= 1/2 × 15 × 10
= 75 cm^2 .

B . luas = 1/2 × d1 × d2
= 1/2 × 20 × 14
= 140 cm^2

C .luas = 1/2 × d1 × d2
= 1/2 × 16 × 10
= 80 cm^3

D. luas = 1/2 × d1 × d2
= 1/2 × ( 5 + 9 ) × ( 4 × 2 )
= 1/2 × 14 × 8
= 56 cm^2 .

5 . luas = 1/2 × d1 × d2
60 = 1/2 × d1 × 8
d1 = 60 : ( 1/2 × 8 )
d1 = 60 : 4
d1 = 15 cm.
jadi , panjang diagonal lain layang layang adalah 15 cm .

semoga membantu *_* dan bermanfaat *_*

4a)L = 1/2×d1×d2
= 1/2×15×10
= 75 cm^2
b) L = 1/2×d1×d2
= 1/2×20×14
= 140 cm^2
c) L = 1/2×d1×d2
= 1/2×16×10
= 80 cm^2
d) L = 1/2×d1×d2
= 1/2×(5+9)×(4+4)
= 1/2×14×8
= 56 cm^2
5) L = 60 cm^2
d1 = 8 cm
d2 = .....?
L = 1/2×d1xd2
60 = 1/2×8×d2
60 = 4 × d2
d2 = 60/4
= 15 cm
Jadi panjang diagonal yg lainnya adalah 15 cm