Find the Circumference 2 x 3.14 x r?

What is the relationship between circumference and pi?

In any circle, the product of pi and the diameter will be the circumference. That is because pi is the ratio of the diameter of a circle to its circumference. Here is the equation: c = pi x d

The formula for the volume of a sphere?

2 pi r times the circumference sqaured. then take this and find out its square root. This however, only works if you have the circumference. If you have both the volume and the height, you can find the formula for the radius by solving the following literal equation for "r": V=1/3 r^2(3.14)(H) r=(3V/pi H)square root

What formula would be used to find the maximum current that can be carried by a resistor if the resistor's resistance and wattage rating are known?

You use a combination of Ohm's law ( V = I * R ) and the power formula ( P = V * I ).Substituting you get: P = ( I * R ) * I = I**2 * RDividing both sides by R you get: P / R = I**2 * R / R = I**2Taking the square root of both sides you get: SQRT( P / R) = ISwapping sides of the equals sign you get: I = SQRT( P / R )Thus the maximum current can be found using the equation I = SQRT( P / R ).

What is the formula to calculate the height of a cord?

Easiest way to find the length of a cord: (enter in scientific calculator as shown below) x=2 squareroot(h(2*r-h)) Where: x is the answer or the endpoint of the cord where it would meet the radius. h is height or the amount of flat you want from the top of the radius. r is the radius. So: Say we have a round bar which is 90mm radius (180mm diameter). We want to machine a flat on the bar 40mm deep from the outer edge but need to know the distance where the edge of the flat meets the radius. x=2 squareroot(40(2*90-40)) x=74.833mm This calculation is useful to find any point at which the cord will intersect the radius/diameter. -------------------------------------------------------------------------------------------------------------- You mean the highest point in the segment formed by a cord, or, how much do you shave off a circle to get a flat of a known length? R = circle radius r = 1/2 cord length H = height of segment Square 'r', or multiply 'r' by itself Square 'R' and subtract value of your 'r squared' Find 'square root' of this remainder. Use calculator key or test multiply to find a close factor. Subtract this factor from "R" and the result is "H"

How do you find slant height of a cone?

What is the radius and circumference of a sphere when its surface area covers 314 square inches taking pi as 3.14 and showing your work?

S.A. = 4 pi r^2 Substituting 314 = 43.14r^2 Algebraically rearrange 100/4] r^2 = 314 / (4 * 3.14) r = sqrt[314/(4*3.14)] r = sqrt[ 100/4] r = sqrt[25] r = 5 inches The circumference of a sphere is a circle. Hence C = 2 pi r C = 23.145 C = 10*3.14 C = 31.4 inches.

How do you find out the area if you have the circumference?

Circumference = 2*π*r where r is the radius So r = circumference/(2*π) Then Area = π*r2

What is the area of a circle with the circumference of 62.8 inches?

Circumference = 2 pi r = 62.8 so r = 31.4/pi = 10 Area = pi r2 = 100 pi = 314 in2

How to find the circumference and area?

2(pi)r (pi)r^2

What is the circumference when the radius is r?

To find the circumference of a circle, use the equation: Circumference = 2*π*radius so when the radius is r, the circumference is 2πr

What is the area of a circle in terms of its circumference?

Using the circumference, you would find the radius first. The circumference C = 2*Pi*r where r is the radius. Then, the area of the circle = Pi*r^2.

Area of a circle is 36 square centimeters what is the circumference of the circle?

The area of a circle with radius r is pi*r*r and its circumference is 2*pi*r Use the first to find r and then use that value of r in the second to find the circumference.

How do you find the radious of a circle can you find the circumference?

The radius of a circle is the distance from its centre to its circumference. If a circle has a radius of r units then the length of its circumference is 2*pi*r units.

If the area of a circle is 314 square inches what is the circumference of the circle?

62.8 inches. the formula for a circle's area is a = pi x r squared. substitute 3.14 for pi and 314 for a. 314 = 3.14 x r squared (divide both sides by 3.14) v 100 = r squared (find the square root of both sides) v r = positive or negative 10 . since it stands for the radius of a circle, it has to be positive. now that you know the circle's radius, you can solve the circumference formula, c = 2 x pi x r. c = 2 x 3.14 x 10 c = 62.8