Answer:
Choice D: 19.5
Explanation:
The main equation used is 1/2 bh
the first triangle has a base of 4 and height of 3, so it would be 1/2 of 12, which is 6. As for the second one, it has a base of 9 ( you add the 4 and 5 ) and a height of 3, so it would be 1/2 of 27, which is 13.5, so 13.5+6 is 19.5