Answer:
volume=πr²h
75.36=<u>2</u><u>2</u><u>×</u>3×3×h
7
75.36=<u>198×</u>h
7×75.36=<u>198×h×7</u>
<u>527.52</u>=<u>197×</u>h
197. 197
h=2.68
6+6=12
Step-by-step explanation: