tlong ya kak jawab no 5,6,7,8 pake caranya

5. Keliling = 2×(p+l)=60 cm
a) 2((2x+7) + (3x-2)) = 60 cm
4x + 14 + 6x - 4 = 60
10x + 10 = 60
10x =60-10
10x= 50
x =50 ÷ 10
x =5
b)p = 2x + 7
-Panjang = 2.5 +7
= 10+7 = 17 cm
-Lebar = 3x-2
= 3.5 -2
= 15-2 = 13 cm
c)Luas = p×l
L = 17 ×13
= 221 cm2

6. a) x+6 =3x-2
3x-x = 6+2
2x = 6+2
2x =8
x = 8÷2
x = 4
b) Sisi = x+6 = 4+6
Sisi = 10 cm
- Keliling = 4s
= 4×10
= 40 cm
-Luas = s×s
= 10×10
= 100 cm2

7. Keliling = 2 (p+l) = 82 cm
= 2 ((2x + x+2)= 82
= 4x +2x +4 = 82
6x + 4 = 82
6x = 82 - 4
6x = 78
x = 78÷6
x = 13
Jadi, panjang = 2x = 2.13 = 26 cm
Lebar= x +2 = 13 +2=15 cm
Luas = p×l
= 26 × 15
= 390 cm2

8. Yang no 8 di foto ya
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