A striped marlin can swim at a rate of 70 miles per hour is this a faster or slower than a sailfish which takes 30 minutes to sw
1 answer:
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Answer:
17 m
Step-by-step explanation:
As shown in the figure, is the ground level,
is the old level of water which was at 20 m below ground level,
is the new level of water which is 5m above of old level. The height of wall of the well, 1.20 m, and the the pelly at 80 cm =0.80 m, has been shown too.
The minimum length of the rope is equal to the distance between the pully and the new water level, indicated by the length in the figure.
So,
Hence, Raghu must use a rope having the minimum length 17 m to draw water from the well.
