a.panjang AE=...cm b.Luas trapesium ABCD=...cm² tolong jawab ya pake caranya,makasi

a. AE=√17²-15²
=√289-225
=√64
= 8 cm
b. Diket a = 14 cm, b= 8+8+14=30 cm, t=15 cm
L = ½×(a+b)×t
=½×(14+30)×15
=½×44×15
=22×15
=330 cm²