The answer is C i believe
Answer:
40 meters²
Step-by-step explanation:
Formula for the area of a triangle is 

The area of the triangle is 40 m²
Answer:
30 Percent
Step-by-step explanation:
Answer:
14 x 15 x 18 + 11 x 13 x 16
Step-by-step explanation:
You have to orginize them from smallest to largest, 'x' is the median so I put it in the middle:
3, 4, 10, x,15, 18, 21
That means 11-14 could be x.