Ответ:
FK = BC+AD/2
тогда:
6х=(2х+60)/2
12х=2х+60
10х=60
х=6
FK = 6x = 6×6=36cm
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Ответ:
FK = BC+AD/2
тогда:
6х=(2х+60)/2
12х=2х+60
10х=60
х=6
FK = 6x = 6×6=36cm