Question

Tolong ya kerjain no 24,25,26,27,28,29,30,31 pake cara! Makasih ❤

Answer 1

24. keliling = 4 × sisi = 4 × 17 = 68 cm
25. luas = 3,14 × 20 × 20 = 1.256 cm²
26. keliling persegi = 4 × 14 = 56 , keliling 1/4 lingkaran = 1/4 × 22/7 × 28 = 22 cm = 56+22 = 78 cm
27. balok
28. luas permukaan = 6 × 18 × 18 = 1.944 cm ²
29. volume = 3,14 × 15 × 15 × 40 = 28.260 cm³
30. v.kubus = S³ = 16³ = 4096 cm³
v.prisma = (16×16:2)×10 = 128 × 10 = 1280 cm³
= 4096+1280 = 5.376 cm3
31. volume balok × 2/3 = 10×6×1,5 = 90 × 2/3 = 60 m³