Matematika

Pertanyaan

tolong bantu ya pakai cara?
tolong bantu ya pakai cara?

2 Jawaban

  • K = π × d
    132 = 22/7 × d
    132 × 7 = 22 × d
    924 = 22 × d
    d = 924 ÷ 22
    d = 42 cm

    r = 42 ÷ 2
    r = 21 cm

    V = π × r² × t
    = 22/7 × 21 × 21 × 16
    = 22.176 cm³ ( A )
  • k = 2 pi r
    132 cm = 44/7 × r
    v = pi × r^2 × t
    = 22/7 × 21 × 21 × 16
    = 22176 cm