Nomer 8.luas daerah yg di arsir Nomer 9.luas bangun persegi ama segitiga Tolong yak kak

no.9.
L. Persegi panjang   = p x l
                                 = 40 x 30
                                 = 1200

L. Segi tiga               = 1/2 x alas x tinggi
                                 = 1/2 x 40 x 4
                                 = 1/2 x 160
                                 = 80

Penyelesaian = Lpp + Lst
                       = 1200 + 80
                       = 1280