Bantu Ya No. 5 sampai 12 . Please Banget ^-^

5.
A. Panjang 4 Batang
Lebar 4 Batang
Tinggi 4 batang

B. Panjang kawat = 4 (p + l + t)
= 4 (14 + 8 + 6) cm
= 4 × 28 cm
= 112 cm

6.
A. P kawat = 4(p+l+t)
72 = 4(10 + 5 + t)
72/4 = 15 + t
18 = 15 + t
t = 18 - 15
t = 3 cm

B. 72 = 4(p + 5 + 5)
72/4 = p + 10
18 = p + 10
p = 18 - 10
p = 8 cm

7.
a. SLQN, KSRL, QNMP, PLMS, KQRN
b. persegi panjang

8.
Luas BCHE = s² √2
= 8 × 8 × √2 cm²
= 64 cm²

9.
diagonal ruang = s √3
√147 = s√3
s = √147 / √3
s = √49
s = 7 cm

L bidang diagonal = s² √2
= 7² √2 cm²
= 49 cm²

10.
a. HB, AG, DF
b. d² = p² + l² + t²