A. 4m²
B. 8m²
C. 2m²
D. 1m²
Correct Answer: Option A
Explanation
Pressure developed in the effort piston = F/a
∴F/a = 40/0.4 = 400/4 = 100Nm2
this pressure is transmitted to the larger piston of area A; => P = F/A
∴ 100 = 400/A
=> A = 400/100 = 4m2
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