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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Mathematics » Length and Height

Length and Height

Because length represents the length of a shape and height denotes its height, the distinction between length and height is quite accurate. The horizontal dimension of a plane is referred to as length, while the vertical dimension is referred to as height.

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In a geometrical measure, the two perplexing words are length and height. People frequently make erroneous interpretations of these concepts, which results in an incorrect solution to a problem. Both the height and the length are stated in metric units such as metres, inches, and feet. The length refers to the object’s longest side, while width refers to the object’s broadest side.

Definition

Length: In geometry, length is the object’s longest dimension. This term refers to the object’s entity, regardless of its dimensions. Typically, length is measured along the coordinate geometry’s x-axis, which corresponds to the horizontal extent.

Height: It is defined as the distance between the base and the top of an object. Occasionally in geometry, the term “height” refers to the measurement of an object’s length along the y-axis in coordinate geometry.

Three dimensions

When naming the dimensions of a three-dimensional figure, the only requirement is that they make sense and are unambiguous. Utilizing labels will aid in this process.

When a figure is “level,” the term “height” obviously refers to the vertical dimension—how tall the figure is—regardless of whether that dimension is greatest, least, or somewhere in between; length (if the term is used) refers to the length of the other two dimensions. However, you may also refer to the other dimensions like width and depth (which are nearly interchangeable, depending on how wide or deep the figure “looks”). Consider the following example.

height, width, length

When height is unclear—for example, if the figure is not “level”, people have no idea what width, depth, or height signify, while the length is commonly considered to relate to the picture’s longest measurement. Additionally, like with two dimensions, terminology such as “length,” “width,” and “height” will feel natural and unambiguous for certain shapes, such as a tennis ball.

Significant Distinction between Length and Height

The following points are significant in terms of the length-to-height ratio:

  1. Length is the object’s end-to-end measurement. On the other hand, height refers to the distance between the base and the top of an object.

  2. Length indicates the length of something, but height indicates the height of someone or something.

  3. While length is measured along the X-axis, which represents something’s horizontal side, height is measured along the Y-axis, which represents something’s vertical side.

  4. Length is nothing more than the object’s longest facet. In contrast, height refers to the side of an object that would face upward in its natural configuration.

Similarities

  • Both length and height are linear measurements

  • They are expressed in terms of distance

  • The measure such as feet, inch, metres, and yards.

Calculation of Length and Height of a Ramp

To calculate the ramp, we need as much information as possible, because the resulting dimensions must be checked against the project’s requirements and applicable technical standards.

Naturally, the first step is to determine the fundamental information, which includes the height, length, and slope, so let’s learn how to utilize the method below to obtain these numbers.

Calculation of Slope of A Ramp

To determine the appropriate slope for the ramp, the height to be exceeded and the length of the ramp must be known.

CALCULATE RAMP SLOPE

This method of ramp calculation is most frequently employed when the ramp already exists and we need to determine the slope %.

Consider a ramp with a length of 4 metres and a height of 1.20 metres.

The value of 1.20 is then multiplied by 100 (resulting in 120), and the result is divided by four to obtain the value of 30. Bear in mind that the result must be represented as a percentage; in this case, 30%.

CALCULATE RAMP SLOPE

The value of 30% suggests that for every 30cm gained in height, we gain 1 metre or 1.20 metres in 4 metres.

After obtaining the result, it is required to determine the function of the respective ramp and whether the dimensions fit the requirements and applicable technical standards.

Calculation of length of A Ramp

To determine the length of the ramp, we must first determine the slope and height.

CALCULATE LENGTH

This form of ramp calculation is used to determine the length of a ramp that is required for building.

Consider a vehicle ramp that requires a 15% slope and a height of 1.60 metres.

CALCULATE LENGTH

After multiplying 1.6 by 100 (which is 160), we get 10.66, which is the overall length of the ramp.

This ramp is 10.66 metres in total length, and it is required to verify that this dimension complies with all applicable technical criteria and regulations.

Calculation of height of A Ramp

 To get the needed height for the ramp, you must first determine the length and slope of the ramp.

CALCULATE LENGTH

This type of ramp computation is utilised when the length and % of inclination of the ramp are known, allowing us to determine the maximum height reached by the ramp.

Consider a ramp that must be 7 metres long and have a 10% slope; therefore, we must determine the height.

CALCULATE LENGTH

The value of 7.00 is then multiplied by 10 (resulting in 70), and the result is divided by 100 to give the value of 0.70m.

Conclusion

As a result of the preceding discussion, it is evident that these two ideas of geometry are distinct. They are frequently confused, but that does not make them synonymous. The object’s position is critical in establishing which dimension is the height and which is the length because the measurements change when the object’s position changes; in essence, the object’s height becomes its length and its length becomes its height.

faq

Frequently asked questions

Get answers to the most common queries related to the JEE Examination Preparation.

Can the length and height of a person be the same?

Ans. No, length and height do not equal one another. The primary distinction b...Read full

Isn't it always the case that length exceeds width?

Ans: When the length is the greatest dimension, width or breadth are typically...Read full

Is long synonymous with length?

Ans: If you choose to use the term “length,” it should relate to the rectangle’s longest dimension...Read full

Ans. No, length and height do not equal one another. The primary distinction between an object’s length and height is that although the former represents the length of an object, the latter typically reflects the object’s height.

Ans: When the length is the greatest dimension, width or breadth are typically used to refer to a shorter dimension. The third dimension of a three-dimensional object is called depth.

 

Ans: If you choose to use the term “length,” it should relate to the rectangle’s longest dimension. Consider how you would describe the length of a road: it is the long-distance, the road’s length. (The terms along, long, and length all refer to the same thing.)

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