Segment in a triangle

In a triangle ABC with the side/AB/ = 24 cm is constructed middle segment/DE/ = 18 cm parallel to the side AB at a distance 1 cm from AB. Calculate the height of the triangle ABC to side AB.

Correct result:

h =  4 cm

Solution:

18h = 24(h-1)

18•h = 24•(h-1)

6h = 24

h = 4

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