Question

Sebuah trapesium dengan alas 15cm tinggi 8cm 108cm2 berapa sisi atas

Answer 1

A = 15 cm
t = 8 cm
L = 108 cm²

b = ....

L = 1/2 (a+b) x t
108 = 1/2 (15+b) x 8
108 = 4 (15+b)
15+b = 108/4
15+b = 27
b = 27-15
b = 12 cm