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You need to measure the dimensions.
inches
mL=cca milliliter is the same measurement as a cubic centimeter.Liters measure volume and centimeters measure dimensions.
There cannot be a 12m rectangle. A rectangle is a two dimensional object and so there must be two linear measures to describe it. Either there is measure of another length, for example a 12m x 8m rectangle. In that case the question is redundant. Or the 12m is intended as a measure of area and should actually have been 12 SQUARE metres. However, in that case, there are infinitely many possible solutions.
First of all, an acre is a 2-dimensional measure of area so a square acre is a measure in 4-dimensional hyperspace. Furthermore, the area of a a plot does not provide enough information to determine its dimensions. It does not even determine its shape: circular, ellipse, triangle, square, rectangle, parallelogram, polygon of more than 4 sides, some irregular shape. Even if you are told it is a rectangle, it could be a near-square or a long thin rectangle.
You need to measure the dimensions.
If you know the dimensions of the missing triangle, then compute the area from those dimensions, then subtract that answer from the area of the full rectangle.
inches
mL=cca milliliter is the same measurement as a cubic centimeter.Liters measure volume and centimeters measure dimensions.
The length of a pencil. your waist/chest measurement the dimensions of a table
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.
the measure for a regular rectangle is 69in. by fudge you and measure it yourself.
There cannot be a 12m rectangle. A rectangle is a two dimensional object and so there must be two linear measures to describe it. Either there is measure of another length, for example a 12m x 8m rectangle. In that case the question is redundant. Or the 12m is intended as a measure of area and should actually have been 12 SQUARE metres. However, in that case, there are infinitely many possible solutions.
we answer quantities precisely by using measuring tools like rulers, and meter sticks :)
First of all, an acre is a 2-dimensional measure of area so a square acre is a measure in 4-dimensional hyperspace. Furthermore, the area of a a plot does not provide enough information to determine its dimensions. It does not even determine its shape: circular, ellipse, triangle, square, rectangle, parallelogram, polygon of more than 4 sides, some irregular shape. Even if you are told it is a rectangle, it could be a near-square or a long thin rectangle.
For a regular object you measure the three dimensions of an object - length, width and height. After measuring each of these you then multiply them all together which leaves you with the volume of your object. Alternately, you could use a different way of calculating volume: displacement. Put x amount of water in a container with measurement markers on the sides. Then add the object. Subtract the final measurement from the original measurement and you will have the volume of the object.
You take a ruler or tape measure and measure the dimensions you need.