Perimeter and Circumference Quiz
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Questions and Answers

How is the length of a closed piecewise smooth plane curve $\gamma : [a, b] \to \mathbb{R}^2$ with $\gamma(t) = (x(t), y(t))$ computed?

  • $L = \int_{a}^{b}{x'(t)\,dt} + \int_{a}^{b}{y'(t)\,dt}$
  • $L = \int_{a}^{b}{\sqrt{x'(t)^{2}+y'(t)^{2}}\,dt}$ (correct)
  • $L = \int_{a}^{b}{(x'(t)+y'(t))\,dt}$
  • $L = \int_{a}^{b}{\sqrt{x'(t)^{2}-y'(t)^{2}}\,dt}$
  • What theory describes the generalized notion of perimeter, including hypersurfaces bounding volumes in $n$-dimensional Euclidean spaces?

  • Lebesgue integration
  • Caccioppoli sets (correct)
  • Fourier series
  • Riemann sums
  • Who approximated the perimeter of a circle by surrounding it with regular polygons?

  • Euclid
  • Archimedes (correct)
  • Pythagoras
  • Newton
  • Which shapes are fundamental to determining perimeters because their perimeters are calculated by approximating them with sequences of polygons tending to these shapes?

    <p>Polygons</p> Signup and view all the answers

    What is the formula for calculating the length $L$ of a closed piecewise smooth plane curve $\gamma : [a, b] \to \mathbb{R}^2$ with $\gamma(t) = (x(t), y(t))$?

    <p>$L = \int_{a}^{b}{\sqrt{x'(t)^{2}+y'(t)^{2}},dt}$</p> Signup and view all the answers

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