im going to being doing this 6 times or more and thats it! I promise <3 no links or files

Answer: 7.6 is the base
Step-by-step explanation: To find this, we work backwards. So, multiply the area by 2, then divide that by the height. That gets us the number 7.6 in this case. To test this, we can then follow the normal steps to getting area of a triangle
Answer:
7.6
Step-by-step explanation:
The screen shot below is your explanation.