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
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The common formula to find the volume of a sphere is 4/3 pi r3.
pi = approx. 3.14
r = radius of sphere.
The answer depends on the radius of what! The formula for a circle or sphere are different. The answer also depends on what information is available about the circle or sphere.
The mass of a sphere is 4/3*pi*r3*d where r is the radius of the sphere and d is the density of the material of the sphere.
Dilution factor is the final volume / aliquot volume. Aliquot volume is the measure of sub volume of original sample. Final volume is the total volume. Dilution factor =final volume /aliquot vol. for example ; what is the df when you add 2ml sample to 8m??? total vol is 2+8=10 DF=total vol/aliquot. 10/2=5 So 5 is dilution factor
That's a fairly easy calculation.The Sun is 93,000,000 miles away. The formula for the area of a sphere is 4/3*pi*r^2The cross-sectional area of the Earth is a circle with a radius of about 4,000 miles. The formula for the area of a circle is pi*r^2.Google can be used as a calculator! The answer is(pi * (4000^2)) / ((4 / 3) * pi * (93 000 000^2)) = 1.38744364 × 10-9So, 0.0000001387%.In technical terms, that's "Not much!"Comments: Unfortunately, this answer uses the wrong formula for the surface area of a sphere. I calculate the correct answer to be about 0.00000004.5 %.Also, it doesn't deal with the point about how much energy reachesthe surface of Earth.Surface area of a sphere is: 4 "pi" (radius)2 .
A millimetre is a unit of distance. A cubic foot is a unit of volume. The two units are therefore incompatible.
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