Volume Of The Earth Math
And the radius of the earth is 3963 miles so the volume is.
Volume of the earth math. 4 3 3963 3 5280 3 12 3 cubic inches. There are 231 cubic inches in a gallon so finally the volume of the earth is. The earth s core accounts for 15 of earth s volume but more than 30 of the mass the mantle for 84 of the volume and close to 70 of the mass while the crust accounts for less than 1 of the mass. In our case if we can estimate how many grains of sand there are in a typical volume of beach say the number of grains per cubic meter and then estimate what the volume of sand is on all the beaches of the world say in cubic meters then all we have to do to find the total number of grains of sand is.
If the earth were measured to the accuracy of a centimetre it would be immediately apparent that the earth is not spherical and so the above formula is not valid. There are 5280 feet in a mile and 12 inches in a foot so this is. Using the parameters from wgs84 ellipsoid of revolution a 6 378 137 km and b 6 356 752 3142 km v 1 08321 10 12 km 3 2 5988 10 11 cu mi. 4 3 x 3 14 x 6400000 3 m 3.
Hence an important starting point is the accurate estimation of the earth s atmosphere volume and more specifically that of the lower part of the atmosphere e g the troposphere. This comes to 1 097 509 500 000 000 000 000 cubic meters. The volume of a shpere is. Its volume is then.
Inner core to the outer core. The mean radius of the earth is approximately 6 4 million meters exact 6 37 x 10 6 m. About 90 of the mass of the earth is composed of. Earth s density varies considerably between less than 2700 kg m 3 in the upper crust to as much as 13 000 kg m 3 in the inner core.
The best way to tackle a tough problem like this is to break it down into easier parts. Use the depths of the boundaries of earth s major layers table below to calculate the volume of each layer. However assuming that the earth. The volume of the reference ellipsoid is v 4 3 π a 2 b where a and b are its semimajor and semiminor axes.
4 3 39633 52803 123 231 gallons. Needless to say this is very large. 4 3 r 3.