tolong dibantu dengan caranya ya luas permukaan balok 468 cm2. perbandingan p : l : t = 4 : 2 : 3. volume balok tersebut adalah.... A. 24 cm3 B. 52 cm3 C. 468 c

Langsung aja y

Lp = 2(pl + pt + lt)
468 = 2 (4a×2a + 4a×3a + 2a×3a)
234 = 8a² + 12a² + 6a²
234 = 26a²
a² = 234 : 26
a = √9
a = 3

p = 4 × 3 = 12 cm
l = 2 × 3 = 6 cm
t = 3 × 3 = 9 cm

V = p × l × t
V = 12 × 6 × 9
V = 648 cm³

Jawabannya D

Semoga berguna +_+

L balok = 2 (pl+pt+lt)
468 cm2 = 2 (4x.2x+4x.3x+2x.3x)
468cm2 = 2. 26x
468 cm2 = 52x
x2 = 468/52
x2 = 9
x =√9
= 3
#P = 4.3
= 12 cm
# l = 2.3
= 6 cm
#t = 3.3
= 9 cm

v balok = p.l.t
= 12.6.9
= 648 cm³ (D)