Spruce height

How tall was spruce that was cut at an altitude of 8m above the ground and the top landed at a distance of 15m from the heel of the tree?

Correct result:

x =  25 m

Solution:

a=8 m b=15 m   c=a2+b2=82+152=17 m  x=a+c=8+17=25 m



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