A) Area of the circle
B) \[\frac{\pi }{2}\]
C) \[2\pi \]
D) 4
Correct Answer: D
Solution :
We know that The area of circle \[=\pi {{r}^{2}}=\frac{\pi {{D}^{2}}}{4}\] [where D : Diameter of circle] and Circumference of circle \[=2{{\pi }^{2}}r=\pi D\] Now, according to question, \[\frac{\pi {{D}^{2}}}{4}=\pi D\] \[{{D}^{2}}=4D\] or \[D(D-4)=0\] or D = 4You need to login to perform this action.
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