Question

Bantuin dong 38,39,40. Penjelasanya juga ya

Answer 1

38.V= s³ 
     125 = s³
      s=∛125
      s = 5 cm
     L=6s² = 6.25=150 cm²

39. L.total = 2πr (r +  t) - πr² = 2.22/7.14 (14 + 4) - 22/7.14.14 =1584 - 616 = 968
     cm²
40.t . segitiga = √20²-12²=√400-144 = √256 = 16 cm
     L = 2.1/2.a x t +  AB x BF +CD x FC + AB x BC 
        = 24 x 16 + 2 (8 x 20) + 8 x 24
        = 384 + 320 + 192
        = 896

Answer 2

38. Volume kubus = s*s*s
125 = 
s = 
s = 5.

Luas sisi kubus = Luas persegi . 6
L = (5 . 5) .6
L = 150. (A)

39. Luas tabung tanpa tutup = 
L = 
L = 
L = 968. (B)

Yang no. 40, kurang tahu.