Tolong dijawab besok dikumpulkan

Luasnya
1/2 x (17 + 23) x 14 = 280 cm2

x = 70
y = 180 - 70 - 90 = 10
Luas
1/2 x (23+17) x 14
1/2 x 40 x 14
20 x 14
280cm^2