What is the side length of the smallest square plate on which a 28-cm chopstick can fit along a diagonal without any overhang?
2 answers:
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The given equation of parabola is
Which can also be written as
Here vertex (h,k) is (1,2)
And value of a is
Formula of focus is
Substituting the values of h,k and a, we will get
Therefore the correct option is the last option .