Matematika

Pertanyaan

Kalo bisa nomor 7,8,9,10, kalo gak nomor 7 aja yah! jangan lupa pake cara!
Kalo bisa nomor 7,8,9,10, kalo gak nomor 7 aja yah! jangan lupa pake cara!

1 Jawaban

  • 7.
    a = 8cm
    t = 6cm
    V prisma = ½×a×t× T.prisma
    600 = ½×8×6×T
    600 = 24T
    T = 600/24
    T = 25cm

    8.
    a = 10cm
    t = 15cm
    V. prisma = ½×a ×t ×T.prisma
    3000 = ½×10×15×T.prisma
    3000 = 75T
    T = 3000/75
    T = 40cm

    9.
    d = 14cm maka r = 7cm
    t = 24cm
    V. tabung = πr²t
    22/7×7×7×24 = 3696cm³

    10.
    s = 7dm
    V. kubus = s³
    7×7×7 = 343dm³

    d = 7dm
    t = 8dm
    V. tabung = ¼πd²t
    ¼×22/7×7×7×8 = 308dm³
    V. gabungan = 308+343 = 651cm³