NIFT UG 2013 Question Paper with solutions

Question : 48 of 150

Marks: +1, -0

a square of which the diagonal is 15 metre?

Solution:

Let side length of equilateral triangle = 5
Area of equilateral triangle

=√3/2(side)^2

According to the question,

√3/2(\side)^2=(15)^2

√3/2(s)^2=225

(s)^2={225×2}/√3

⇒s=16.11m

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