Respuesta :

Answer:

1: 12 km

2: 10.5 km

3: 3.5 mm

4: 12 m

5: 5 m

6: 49.5 cm

Step-by-step explanation:

To find the area of any triangle, multiply the height by the base, then divide by two.

Triangle are equal (H x B) ÷ 2