kak,tolong di jawab pliss

18. D. 2.110kg
      2ton        + 0,75 kwintal + 35kg = ..... kg
      2.000 kg +      75 kg       + 35kg = 2.110 kg
      (1ton = 1.000kg ; 1kwintal = 100kg)


19. B. 616cm²
      [tex]L= \pi r^{2} = \frac{22}{7} . 14^{2} = \frac{22}{7} .196 = 616 cm^{2} [/tex]


20. D. 32cm
      Luas = s² = 64cm² = s =√64 = 8cm
      Keliling = 4s = 4(8) = 32cm
                    

21. A. 13cm
      Volume = s³ = 2.197cm³
                      s  = ³√2.197 = 13cm