Matematika

Pertanyaan

pakai cara yaa,Tolongg bangett
pakai cara yaa,Tolongg bangett

1 Jawaban

  • volume kerucut = 1/3πr²t
    r = 5
    t² = 13² - 5²
    t² = 169 - 25
    t = √144
    t = 12 cm
    [tex]v = \frac{1}{3} \times 3.14 \times 5 \times 5 \times 12\\ \: \: \: \: = \: 313.9\: cm {}^{3} [/tex]
    volume balok = πr²t
    r = 5
    t = 25 - (12 + 5) = 25 - 17 = 8 cm
    [tex]v = 3.14 \times 5 \times 5 \times 8 \\ \: \: \: = 628 \: cm {}^{3} [/tex]

    volume bola = 4/3πr³
    [tex]v = \frac{1}{2} \times \frac{4}{3} \times 3.14 \times 5 \times 5 \times 5 \\ \: \: \: \: = 261.6 \: cm {}^{3} [/tex]
    volume seluruhnya = 313,9 + 628 + 261,6 = 1203,7 cm³
    jadi jawabannya yang B