Ответ:
S=a²
(a-7)²=a²-119
a²-14а+49=а²-119
14а=168
а=12
P=4a=4*12=48см
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Ответ:
S=a²
(a-7)²=a²-119
a²-14а+49=а²-119
14а=168
а=12
P=4a=4*12=48см