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## Homework Statement

Calculate the tensile stress in a rod 40 mm in diameter with a load 200 KN ?

## Homework Equations

pi*r^2

## The Attempt at a Solution

3.14 * (20*20) = 1256 mm^2

200 * 1000 = 200 000 N

200 000 / 1256 = 159.24 N/mm^2

Tensile stress = 159.24 N/mm^2

Could anybody tell if this is correct and offer some guidance if its not? Thanks