Question

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Nanti jadiin yang tebaik deh

Answer 1

29. Persegi panjang = 40x16x20

= 12,800cm3

Limas = 1/3x40x16x15

= 3,200

12.800+3.200

= 16.000


30. Persegi Panjang =


(2x13x12)+ (2x12x5)+(2x5x13)

312+ 240+130

= 562 cm2

Persegi=

5x5x5

125


562 +125

= 687cm2



Maaf kalau slh



Ma

Answer 2

Jawaban:

29. V limas = 1/3 × la × t

= 1/3 × ( 40 × 16 ) × 15

= 1/3 × 640 × 15

= 1/3 × 9.600

= 3. 200

V balok = p × l × t

= 40 × 16 × 20

= 12. 800

volume keduanya = v1 + v2

= 3.200 + 12.800 = 16.000 ( b )

30. lp balok = 2 × ( p×l ) + ( p×t ) + ( l×t )

= 2× ( 13×5 ) + ( 13×12 ) + ( 5×12 )

= 2× ( 65 + 156 + 60 )

= 2× 281 = 562 - (5 ×5)

= 537

lp kubus = 6 × ( s × s )

= 6 × (5 × 5)

= 6 × 25

= 150 - 25 = 125

lp keduanya = lp 1 + lp 2 =

= 537 + 125 = 662 ( b )

penjelasan :

Semoga Membantu..

dikurangi 25 sebab itu yang dihitung luas permukaan bukan volume..