Question

Bantu ya thx.... No 29,30

Answer 1

Verified answer

29.jumlah rusuk = 15
      panjang semua rusuk = 10(45)+5(75) =450+375 =825 cm
jumlah kandang 3,panjang kawat = 825 x 3 =2475 cm = 24,75 m
  jawab.D.

30. t  segitiga = √10²+24² =√100+576 =√676 = 26 cm
      L pernukaan = L alas+luas sisi tegak
                           = (20 x20 ) +(  4 x 1/2 x20x26)
                            = 400 +1040 
                            =1.440 cm²

jawab.C