luas segitiga 1288 cm2 .jika tinggi 46 cm.berapa panjang alas segitiga

Luas segitiga = 1/2 x a x t = 1288
                      1/2 x a x 46 = 1288
                                       a = 1288 (23)
                                       a = 56 cm

L=½×a×t
1288=½×a×46
1288=23×a
a=1288÷23
a=56 cm