Answer:
1) 6
2) 20
3) 45
Explanation:
To find the area of a triangle, use the formula
, where
represents the length of the base, and
represents the height. In the first triangle, the base length is 4 and the height is 3, so the area is 6. In the second triangle, the base length is 5 and the height is 8, so the area is 20. In the third triangle, the base length is 15 and the height is 6, so the area is 45.