Answer:
We know that
V = πr²h
400 = 22/7 × r² × 8
400 × 7 = 22 × 7r²
2800 = 154r²
2800/154 = r²
18 ≈ r²
4.2 = r
B). About 109 meters
34.9
Step-by-step explanation:
Because if you multiply then divide by 2 that will help you alot.