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Jawaban:
28. D
29. D
30. B
31. A
32. B
Penjelasan dengan langkah-langkah:
28. 22/7 × 14²
= 616 cm²
..
29. 22/7 × 42 × 150
= 132 × 150
= 19800 cm
= 198 m
..
30. 3/4 × 60 × 45 × 50
= 45 × 2250
= 101250 cm³
= 101,25 liter
..
31. 1, 3, 4
..
32. 6 × 17²
= 6 × 289
= 1734 cm²
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]
28) L = 22/7(14(14)
= 22/7(196)
= 22(196/7)
= 22(28)
= 616 CM²
29) J = 22/7(42(150)
= 22/7(6.300)
= 22(6.300/7)
= 22(900)
= 19.800/100
= 198 M
30) V = 3/4(60(45(50)
= 3/4(60(2.250)
= 3/4(135.000)
= 3(135.000/4)
= 3(33.750)
= 101.250/1.000
= 101,25 L
31) SIFAT BALOK :
A) 1,3,4
32) L = 6S²
= 6(17)²
= 6(17(17)
= 102(17)
= 1.734 CM²