Line b is the answer, hope this helped
Area is 2 dimensional while volume is three dimensional.
1/4 cup of olive oil for one batch of salad dressing.
You can see that if the small rectangle is 2/3 of the big triangle by the 4 and 6 that it gives you. If you divide 10 by 2 and multiply it by 3, you get the answer you need. which is 15.
The answer is: -1.66666666667 to be exact
