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## Homework Statement

The Femur bone in the human leg has a minimum effective cross section of about 3.0 cm

^{2}How much compressible force can it withstand before breaking

## Homework Equations

Compressive Strength (bone)(N/m

^{2}) = 170 x 10

^{6}

P = F/A

## The Attempt at a Solution

Not sure what a cross section is exactly, how should A in formula Stress = F/A be written when they state 3 cm

^{2}cross section.

A = PI*R

^{2}

which one do I use for R

A = .015

^{2}

A = .03

A = .03

^{2}

170 x 10

^{6}= F / .03m

^{2}