Mathematics, 10.07.2019 04:00 lilisncz

In isosceles △abc (ac = bc) with base angle 30° cd is a median. how long is the leg of △abc, if sum of the perimeters of △acd and △bcd is 20 cm more than the perimeter of △abc?

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In isosceles △abc (ac = bc) with base angle 30° cd is a median. how long is the leg of △abc, if sum...

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