Kak tolong jawab mau dikumpulkan besok

Kak tolong jawab mau dikumpulkan besok

$l : alas : = frac{1}{2} a.t \ = frac{1}{2} times 14 times 7 \ k = 14 times 3 = 42 : cm \lp = (2 times 49) + (42 times 12) \ lp = 98 + 504 \ = 602 : cm {}^{2} \ \ v = l : alas times tinggi \ = 49 times 12 \ = 588 : cm {}^{3}$