self Maths Puzzle

There is a pole in a lake. One-half of the pole is in the ground, another one-third of it is covered by water, and 11 ft is out of the water. What is the total length of the pole in ft?

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self Other Question

Each child in a family has at least 4 brothers and 2 sisters. What is the smallest number of children the family might have? A cylinder 108 cm high has a circumference of 24 cm. A string makes exactly 6 complete turns round the cylinder while its two ends touch the cylinder's top and bottom. How long is the string in cm?