RRB Junior Engineer Stage 1 Model Papers 5

Question : 23 of 100

Marks: +1, -0

If area of an equilateral triangle is a and height b, then value of

1/3

Solution:

Let side of triangle = x

∴√3/4 x^2=a

....(i)
and

√3/2x=b

x=26/√3

....(ii)
Putting x in equation (i)

√3/4,({2b}/√3)^2=a

b^2/a=√3

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