Tolong jawab pakek jalan dari 26 sampe 28 aja

26. L1 = p x l
           = 16 cm x 12 cm
           = 192 cm²
      L2 = 1/2 x a x t
           = 1/2 x 16 cm x 25 cm
           = 8 cm x 25 cm
           = 200 cm²
      L total = L1 + L2
                 = 192 cm² + 200 cm²
                 = 392 cm²

27. Luas permukaan = s x s x 6
                                  = 14 cm x 14 cm x 6
                                  = 196 cm² x 6
                                  = 1.176 cm²

28. Volume = π x r x r x t
                   = 22/7 x 7 cm x 7 cm x 40 cm
                   = 22 cm x 7 cm x 40 cm
                   = 154 cm² x 40 cm
                   = 6.160 cm³

Ini ya jawabannya, semoga membantu dan jadikan jawaban terbaik ya, trims :)