Find the vertical stress at a depth of 40 cm from the surface if the r – McqOptions

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1.	Find the vertical stress at a depth of 40 cm from the surface if the radius of the circular load is 17 cm and the contact pressure is 6.5 kg/cm2.
A.	0.43 kg/cm<sup>2</sup>
B.	1.43 kg/cm<sup>2</sup>
C.	0.45 kg/cm<sup>2</sup>
D.	1.45 kg/cm<sup>2</sup>
Answer» C. 0.45 kg/cm<sup>2</sup>

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