Tolong di jawab ya... Makasih....

Luas I = 1/2 x (27 + 14) x 30 = 1/2 x 41 x 30 = 615
Luas II = 14 x 30 = 420
Luas III = 1/2 x (14 + 20) x 30 = 1/2 x 34 x 30 = 510
Luas I + II + III = 615 + 420 + 510 = 1545 cm²