Math, asked by rajeshsihag70470, 10 months ago


9. The area of a circle is given by the expression rx? +61X + 91. Find the radius of circle ​

Answers

Answered by 54045103v
1

Answer:

10

Step-by-step explanation:

Since the given expression is quadratic, and is area of a circle, and radius is the roots of the equation, and radius can't be zero, so by applying (D>0)

61^2-4(91)(r)>0

This gives r<10.222

From here r=10

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