Question

Yang nomor 30 tolong di jawab, pake cara :)

Answer 1

150 = 1/2 × (18+12) × t
150 = 1/2 × 30 × t
150 = 15t
t = 150/15
t =10 cm (B)

Answer 2

L = 150
1/2×(a+b)×t = 150
1/2×(CD+AB)×BE = 150
1/2×(12+18)×BE = 150
1/2×30×BE = 150
15×BE = 150
BE = 150:15
BE = 10 cm

Jawaban: B