Matematika

Pertanyaan

11.
12.
13.
tolong dijawab
11. 12. 13. tolong dijawab

1 Jawaban

  • 11. L=1/2×30×12
    =180cm2
    12. L=a×t
    180 cm2=12 cm×t
    t=180 cm2 ÷ 12 cm
    =15 cm
    13. K = 2×(p+l)
    80 cm= 2×(p+12 cm)
    80 cm= 2p+24cm
    2p= 80cm - 24 cm
    2p= 56 cm
    p= 28 cm

    Maaf kalau salah