# Length of Arc

**Problem**

Given the position function *x*(*t*) = *t*^{4} - 8*t*^{2}, find the distance that the particle travels at *t* = 0 to *t* = 4.

A. 160 | C. 140 |

B. 150 | D. 130 |

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## Perimeter of the curve r = 4(1 + sin theta) by integration

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## Length of Arc in Polar Plane | Applications of Integration

The length of arc on polar plane is given by the formula:

The formula above is derived in two ways. See it here: http://www.mathalino.com/reviewer/integral-calculus/length-arc-polar-pla...

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## Length of Arc in XY-Plane | Applications of Integration

The length of arc in rectangular coordinates is given by the following formulas:

See the derivations here: http://www.mathalino.com/reviewer/integral-calculus/length-arc-xy-plane-...

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## Angle between two chords

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## Cycloid: equation, length of arc, area

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## 717 Symmetrical Arcs and a Line | Centroid of Composite Line

**Problem 717**

Locate the centroid of the bent wire shown in Fig. P-717. The wire is homogeneous and of uniform cross-section.

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## Derivation of Formula for Total Surface Area of the Sphere by Integration

The total surface area of the sphere is four times the area of great circle. To know more about great circle, see properties of a sphere. Given the radius r of the sphere, the total surface area is

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