Ответ:
Б. 70 см2.
Объяснение:
S1=3.5 см2 F1=140 H F2=2800 H S2=?
===
p1=p2
F1/S1=F2/S2
S2=F2*S1/F1=2800*3.5/140=70 см2
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Verified answer
Ответ:
Б. 70 см2.
Объяснение:
S1=3.5 см2 F1=140 H F2=2800 H S2=?
===
p1=p2
F1/S1=F2/S2
S2=F2*S1/F1=2800*3.5/140=70 см2
===========================