Cross sectional area

  1. 1. The problem statement, all variables and given/known data
    I'm working on a problem that is asking me to find Young's Modulus. I have the right formula and everything that I need but I can't seem to figure out how to find the cross sectional area of a nylon rope. The rope is 21 m long and 1.4 cm in diameter.

    2. Relevant equations

    3. The attempt at a solution

    Would the cross sectional area be the area: pi(0.7)^2
  2. jcsd
  3. Doc Al

    Staff: Mentor

    Assuming that it has a circular cross-section (a reasonable assumption), then the area would be that of a circle ([itex]\pi r^2[/itex]). But be sure to use standard units for the radius.
  4. nrqed

    nrqed 3,107
    Science Advisor
    Homework Helper
    Gold Member

    yes (but be careful witt the units. This will be in cm^2. You might need to put it in m^2)

    EDIT: Doc Al beat me to it :-)
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