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NIELIT 2018-8

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Let us consider the length of the side of a square represented by $2y+3$. The length of the side of an equilateral triangle is $4y$. If the square and the equilateral triangle have equal perimeter, then what is the value of $y$?

  1. $3$
  2. $4$
  3. $6$
  4. $8$
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It is given that perimeter are equal so

4*side(square)=3*side(triangle)

4*(2y+3) = 3*(4y)

8y+12=12y

4y=12

y=3

Correct answer is A
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parameter of square - 4 *(length of one side) = 4 *(2y +3) == 8y + 12.

parameter of triangle - a+b+c = 4y

 

8y +12 = 0

4y +0 = 0

(-)  (-)

4y =  12

y = 3

 

 

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