Radius of a circle

The radius of a circle is 13. What is the approximate area of the circle ... 

RADIUS of a circle is the line segment whose one endpoint is at the center of the circle and whose other endpoint is on the circle. The radius is one-half the length of the diameter r= d. 

Use the formula for the volume of a cylinder, replacing the Uwith the number of cubic feet. The radius of a circle is half the diameter, so, if the height is equal to the diameter, then the height is equal to twice the radius. Replace the h in the volume formula with 2r and solve for r. 

Let C be the circumference of the cross section of the pores and R be the equivalent radius of a circle having the same circumference, i.e.,... 

In which RQ Is termed "equivalent radius" and Is the radius of a circle having the same area as that of the particle profile, and n Is the order of the coefficient. 

The normal curvature of curves on the surface linking adjacent T atoms is set by the Euclidean distances (1) between these atoms and the angles (A) subtended by the straight lines joining adjacent T atoms. The magnitude of this curvature is equal to the reciprocal of the radius of a circle that contains three vertices spanned by two adjacent bonds. The average value of the normal curvature of the surface over the region of surface sampled by the two bonds is equal to ... 

A simplified downwind hazard assessment can be developed by plotting these protective action distances in the form of a map overlay. The initial isolation distance is the radius of a circle immediately surrounding the point of release where people may potentially be exposed to dangerous or life threatening concentrations of vapor. The downwind distances indicate the area of potential threat posed by vapors carried by the wind. The downwind threat... 

It is customary, in the interconversion of these distribution functions, to assume that the particles are spherical this simplifies the mathematics, but is somewhat questionable physically. The method of measurement determines the nature of the reported radii of these hypothetical spheres e.g. in the case of microscopic sizing, the so-called surface radius is obtained, which is the radius of a circle having the same surface area as the orthogonal projection of the particle. 

For a closed circle, the radius of gyration, which is the rms di.stance from the center of mass [P19.19], is simply the radius of a circle whose circumference is / ... 

Uniform circular motion n. If r is the radius of a circle, v the linear speed in the arc, co the angular velocity, and T is the period or time of one revolution,... 

Rq, R, R- radius of a circle described round a profile on an input and an exit of a zone of deformation, and current value of radius, accordingly 2/ip and 2b - height and width of section on an input L - length of a zone of deformation - an a 2 Sls of slope of the forming die channel, passing through the middle of sides. 

Solution, The effective radius, r, for the. region of radial flow is the radius of a circle that has one-half the area of the five-spot pattern. That is,... 

CIRCULAR ERROR PROBABLE (CEP). A standard estimate of the accuracy for munition delivery systems. It is defined as the radius of a circle in which one-half of the missile warheads, tube-launched projectiles (such as artillery shells and mortar rounds), or air-droppable munitions would land. CEP can be applied to calculate the number of nuclear, biological, or chemical weapons (NBC) needed for a particular effect. 

The Lorentz force defines the movement of charged particles in a magnetic field. If the particles enter the magnetic field in a plane perpendicular to the induction B, the Lorentz force will act perpendicular to both vectors v and B. In the absence of any other force, the Lorentz force is centripetal, and a circular movement will occur (Figure 5.15). Write the equation of Newton s second law for this case qoB=ma =m u lR). The radius of a circle R can be derived from this expression... 

---