I don,t know answer
Half of the Earth's surface is called a hemisphere.
Aprox 2 miles if your running the perimeter of the main section of the park.
A regular tetrahedron, with edges of length 1 units, has a total surface area of sqrt(3) square units.
The area is the square surface and the perimeter is the total distance around the surface.
P stands for Perimeter- The distance around a shape
It depends on whether or not the tetrahedron is regular. There is nothing in the question to indicate that it might be regular. In that case the easiest way to calculate the surface area is to sum the areas of each of its 4 faces.
Neptune is a 3-D figure, it doesn't have a perimeter, it has a surface area.
The curved outer surface of a circle is the perimeter.
I am not a tetrahedron!
The difference between a perimeter and an area is the area is how much space is inside of a surface or a two dimensional object while the perimeter is the distance around a surface or a two dimensional object.
There no such thing as perimeter of 3D objects . Generally perimeter is for 2D objects but you can find the surface are of a cube if you wished to ask that. Surface area of cube is - 6 x side x side.