Answer:
20
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
81π=πr^2
r= 9,-9
9+9=18
Answer:
c
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
The centroid of a triangle is the intersection of the three medians of the triangle (each median connecting a vertex with the midpoint of the opposite side).
<span>parallelogram, opposite sides are equal
</span>so
5x - 8 = 2x + 7
3x = 15
x = 5
hope it helps
