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A flat surface is no more that a plain horizontal surface with no depth. For example the surface of a table top is a flat surface, that is the surface only, not the depth of the top or the rest of the table
Volume= surface area (length x width) x depth re arrange to surface area= depth= Volume/Area Area= Volume/Depth
The area of a circular surface uses the formula pi*the radius squared. So for your question the radius is half the diameter or 4 feet Pi is basically 3.14 3.14*4*4=50.24 square feet. The depth of the water does not apply But if your looking for the volumn you multiply the area*depth or 50.24*1.5 = 75.36 cu.ft. To calculate the number of gallons multiply volumn*7.48 = 563.73 gal.
The depth of a lake at a center point is a function of the distance of that point from shore.
A flat surface with an infinite length and width but no depth is called a plane.
A surface has area but no depth. Therefore the Earth's Surface has a depth of 0.0 kilometers.
The force of gravity is proportional to the masses of the two objects and inversely proportional to the square of the distance between them. As a result, a gravity of one fourth that on the surface of the Earth would be observable at an altitude equal to the radius of the Earth, i.e. 6400 km. Note: This is up, in the air, not down, into the Earth. This distance is in outer space.In the other direction, the force of gravity gets smaller as one goes deeper into the earth. This is because the mass outside your current radius (as you descend) does not contribute. The mass inside your current radius is proportional to the cube of the radius. Gravity is proportional to this mass divided by the square of the radius. Therefore, gravity decreases linearly with the radius. So the acceleration of gravity is equal to one fourth its value at the earth's surface at one fourth of the earth's radius, or a depth of approximately 4800 km.
On the Earth's surface, the depth is between 8-64 kilometers.
Since the earth is not perfectly round, distances vary slightly. From the poles to the center its about 3950 miles. From the equator to the center its about 3960 miles The correct answer is the earth has an equitoral circumference of ~ 24,900 mi and diameter of ~ 7,926mi. With these facts we devise the surface to core distance to be ~3963mi at the equator and 3950mi from the poles.
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A negligible percentage, significantly less than 1%. Rivers occur only of the surface of the earth, around 70% of which is oceans. Rivers occupy a tine proportion of the remaining surface. Compared to the radius of the earth their depth is negligible so that they occupy a minuscule proportion of the earth's volume.
As the depth increases, the density increases also.
about 4000 miles
The radius of the earth is more than 6000km,to reach the centre of the earth we have to dig a whole to this depth which is impossible
Absolutely.
100km
Earth's inner core is farther from the surface than its outer core. The molten liquid outer core extends from about 1,800 to 3,200 miles below Earth's surface, and the solid inner core extends from about 3,200 miles to the center of Earth, at a depth of about 4,000 miles.