Sertakan caranya ya. No 14 dan 15

14.
Volume = p x l x t
1.296 = 3x.2x.x
1.296 = 6x^3
1.296/6 = x^3
216 = x^3
3√216 = x
6 = x

p = 3 x 6
p = 18 cm

L = 2 x 6
L = 12 cm

T = 6 cm


Lp = 2 ( pl + pt + lt )
Lp = 2 ( 18.12 + 18.6 + 12.6 )
Lp = 2 ( 216 + 108 + 72 )
Lp = 2 ( 396 )
Lp = 792 cm^2

jawaban : c.

15.

misal
x = sisi terpanjang segitiga

x^2 = 6^2 + 8^2
x^2 = 36 + 84
x = √ 100
x = 10 cm

Lp = 2 luas alas + 3 sisi tegak
Lp = 2 ( 1/2 x 8 x 6 ) + ( 12.8 ) + ( 12.10 ) + ( 6.12 )
Lp = 48 + 96 + 120 + 72
Lp = 336 cm^2

jawaban : a .

14. P = 3 × n = 3n

l = 2 × n = 2n

T = 1 × n = 1n


V = P × l × T

1.296 = 3n × 2n × 1n

1.296 = 6n

n = 1.296 ÷ 6

n = 216 (diakarkan pangkat 3)

n = 6


jdi


P = 3n = 3 × n = 3 × 6 = 18 cm

l = 2n = 2 × n = 2 × 6 = 12 cm

T = 1n = 1 × n = 1 × 6 = 6 cm


jdi luasnya


L = 2 × (p×l + p×t + l×t)


= 2 × (18×12 + 18×6 + 12×6)

= 2 × (216 + 108 + 72)

= 2 × 396

= 792 cm^2 (C)



15. C = A^2 + B^2

= 8^2 + 6^2

= 64 + 36

= 100 (diakarkan pangkat 2)

= 10


L = 2 × La + Ka × T

= 2 × (1/2 × A × T) + (A + B + C) × T

= 2 × (1/2 × 8 × 6) + (8 + 6 + 10) × 12

= 2 × (1 × 4 × 6) + 24 × 12

= 2 × 24 + 24 × 12

= 48 + 288

= 336 cm^2 (A)