Tolongg bantuu kerjakann kak pliss ku kasi 50 point​

Penjelasan dengan langkah-langkah:

6. t∆ = √(8²+(12/2)²) = √(64+36) = √100 = 10 cm

Lp = 12² + 4x12x10 = 144 + 480 = 624 cm²

7. Volume = 10 x 24/2 x 40 = 120 x 40 = 4.800 cm³

8. s = a

diagonal bidang = s√2 = a√2

diagonal ruang = s√3 = a√3

9. s = √(24² + (14/2)²) = √(576 + 49) = √625 = 25 cm

Luas karton = 22/7 x 7 x 25 = 550 cm²

10. Volume = (5,5)³ = 166,375 cm³

11. banyak model kerangka kubus

= (25 x 100)/(16 x 12)

= 2.500/192

= 13 buah

12. ( gambarnya gak keliatan ... :D )

13. Luas permukaan kubus = 6 x (30/4)²

= 6 x 56,25

= 337,5 cm²