tolong di Jawab ya soalnya buat besok sama pakai caranya

BF=AE= √BC²-CF² = √17²=15² =√289-225 =√64 =8 cm
CD=EF=12
Panjang AB= AE+EF+BF =8+12+8=28 cm
luas permukaan trapesium = 1/2 x (AB+CD) x tinggi
                                            =1/2 x   (28+12) x 15
                                            =1/2 x 40 x 15
                                            =300 cm²
harga permukaan meja= 300 cm² x Rp700,00
                                      = Rp210.000,00