tolong di jawab soalnya mau fi kumpul besok

1) L 1= a x t
= 25 x 17
= 425 cm²
L 2= p x l
= 25 x 22
= 550 cm²
L gabungan = 425 + 550
= 975 cm²
2) L1 = 1/2 x 30 x 17
= 510 : 2
= 255 cm²
L2= p x l
= 30 x 42
= 1260 cm²
L gabungan = 255 + 1260
= 1515 cm²
3) L1 = 1/2 x 43 + 15 x 38
= 1102 cm²
L2= p x l
= 43 x 44
= 1892 cm²
L gabungan = 1102 + 1892
= 2994 cm²