Answer:
0.625
Step-by-step explanation:
Your calculator says error because you cant have a square root of a negative number because there is no solution to that maybe recheck your equation and try again
Answer:
2
Step-by-step explanation:
Answer:21
Step-by-step explanation:
Answer:

Step-by-step explanation:
Area of any triangle could be always calculated as base length multiplied by the height perpendicular to the aforementioned base divided by 2. Therefore:
A = 18 * 11 / 2 = 198 / 2 = 99