Q.

The apothem of a square having its area numerically equal to its perimeter is compared with the apothem of an equilateral triangle having its area numerically equal to its perimeter. The first apothem will be


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a

equal to the second

b

Question Imagetimes the second

c

Question Imagetimes the second

d

Question Imagetimes the second 

answer is A.

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Detailed Solution

Concept: First, we need to find the side lengths of  the square and the equilateral triangle under the given conditions. Next, we need to calculate and compare  both  square and  equilateral triangle apothems.
It has been found that the apothem of a square whose area is numerically equal to its perimeter is compared to the apothem of an equilateral triangle whose area is numerically equal to its perimeter.
What is Apotema-
The apothem distance (sometimes abbreviated as apo) of a regular polygon is the line segment from the center to one midpoint on that side. Similarly, it is a line drawn  perpendicular to one of its sides from the center of the polygon. The term "apothem" may also refer to the length of this line segment. First, find the side length of the square under the given conditions. For this reason,
Let's assume that the length of one side is x. Question Image (given) ... (1)
A square with sides has twice the area is  Question Image and four times the perimeter is Question Image. From equation (1) , it becomes as follows.
 Question ImageDividing both sides by x gives:
 Question ImageNow, in the case of a square, the apothem distance Question Imageis half the length of the side. therefore,
 Question ImageThen calculate the length of the sides of the equilateral triangle for the given conditions. we,
 Question Image (given) ... (2)
Suppose the length of one side is y. For an equilateral triangle with a side of y, the  area is Question Imageand the perimeter is 3y. From equation (2) , it becomes as follows.
 Question ImageDividing both sides by y gives:
Question ImageDivide both sides by Question Imageto
 Question Image ………..(3)
For an equilateral triangle, the apothem distance Question Image is:
Question Image Inserting the value of equation (3) gives:
Question ImageQuestion ImageTherefore, the apothem distances of both equilateral triangles and squares are the same.
Hence, the correct answer is option 1) equal to the second
 
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