Respuesta :
The cross-sectional area of the shaft is 314 mm²
The outside diameter (dâ) = 6 cm = 60 mm
The inside diameter (dâ) = 4 cm = 40 mm
The cross sectional area of the shaft (A) is given by:
A = Ď(dâ - dâ)²/4
Substituting values:
A = Ď(60 - 40)²/4
Simplifying the equation:
A = 314 mm²
The cross-sectional area of the shaft is 314 mm²
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