Q. Water is coming out of a pipe of radius 0.7cm at the speed of 300cm/minute. You are filling buckets (shown in the figure). The water came from 4pm to 5pm. How many buckets (radius=7cm, height=10cm) can you fill with water during this time?
Options:
1) 18 . 2) 20. 3) 10. 4) 15
Pls ANSWER WITH EXPLANATION.

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