tolong dijawab besok dikumpulin

1 = 36 x 28 -  phi x r x r

= 36 x 28 - 22/7 x 14 x 14

= 908 - 22 x 2 x 14

= 908 - 44 x 14

= 908 - 616

= 292

2 =  p x l + 1/2 x p x  l

= 12 x 24 + 1/2 x 18 x 12

= 288  + 1/2 x 18 x 18

= 288 +  1 x 9 x 14

= 288 +  9 x 14

= 288 + 128

= 416