Answer:8
Step-by-step explanation:
If you look at the attached graphic, you will see that the altitude (or height) of an equilateral triangle is:
Height = side length * sq root (3) / 2
Area = side^2 * sq root (3) / 4
Answer:
-11
Step-by-step explanation:
7 - 3 - 5 - 10
4 - 5 - 10
- 1 - 10
-11