Question

Bro tolong bantuin ane di soal no 5

Answer 1

A. L ABD = 1/2 . AB . ED
              = 1/2 . 14 . 9
              = 7 . 9
              = 63 cm²
b. L BCD = 1/2 . DC . ED
               = 1/2 . 24 . 9
               = 12 . 9
              = 108 cm²
c. L ABCD = L ABD + L BCD
                = 63 + 108
                = 171 cm²

Answer 2

A. alas = 14 cm, tinggi = 9 cm
L ABD = 1/2x9x14 = 63 cm²

b. alas = 24 cm, tinggi = 9 cm
L BCD = 1/2x24x9 = 12x9 = 108 cm²

c. trapesium a = 24 cm, b = 14 cm dan tinggi = 9 cm
L ABCD = (24+14)/2 x 9 = 19x9 = 171 cm²