Question 1121458
1/4 is in mud, 1/2 in water, so 1/4 must be the rest and that is above water and 4 meters long
if 1/4 length is 4 meters, the bamboo is 16 meters long ANSWER
12 meters is in mud and water, the rest of it ANSWER
If 9 m is above water, then twice as much, or 18 meters, is in water, since 1/2 is in water and 1/4 above ANSWER