Area.
inches
Two dimensions of length: [L2]
20 by 20 units of measurement
Cubic centimeters are a volume measurement but inches are a linear measurement they are different dimensions and there is no answer to your question as stated.One cubic inch is about 16.4 cubic centimeters.
A metre is a measurement of distance. A second is a measurement of time. One can not be converted in to the other as they are measurements of different things (they are measuring different dimensions).
Cups are a volume measurement, and kilometers are a measurement of distance. The dimensions are different, so you can't convert them.
Area.
One, it is a linear measurement.
Pelvimetry
One square foot. Feet and square feet are the same measurement, just different shapes. Feet and square feet are NOT the same measurement, as anyone with the knowledge of dimensional analysis can tell you. A square foot is a measure of area, with dimensions [L2]. A foot is a measure of distance, with dimensions [L]. The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
Length and volume can both be used to estimate how large something is, but they are really different types of things. Length is just one dimension of measurement, and volume requires three dimensions of measurement.
It does not matter.
The dimensions of a piece of sod are approximately 2' X 6' There is no standard measurement for sod. Sod is a piece of turf of indeterminate dimensions.
Screws have three main dimensions: diameter, length, and thread pitch. The diameter is the measurement across the screw shaft, the length is how long the screw is, and the thread pitch is the distance between each thread on the screw. These dimensions determine the size and compatibility of the screw for different applications.
inches
20 by 20 units of measurement