10.2 all you have to do is add up all the sides... hope this helps!
Solution:
<u>We know that:</u>

<em>Since we are already given the base and the height, we can substitute them into the formula to find the area of the triangle.</em>

<u>Cancel out the "2" by dividing it by 18.</u>

<u>Simplify the multiplication.</u>

The answer is -21/3, -1.4, 21%, 4/5,0.75.
You have to convert them to the same unit.
Answer:
I think the answer is 26.5