Respuesta :

Answer:

Answers below.

Step-by-step explanation:

Area of a triangle is base * height /2

1) 120 * 90 / 2 = 5,400 square meters

2) 24 * 18 / 2 = 216 square cm

3) 12 * 9 / 2 = 54 square cm

4) 2.4 * 1.8 / 2 = 2.15 square cm

5) 6 * 4.5 / 2 = 13.5 square cm