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5. If the perimeter and the area of a circle are numerically equal, then the radius of the circle is
a. 2 units
b.it units
c. 4 units
d 7 units
Answers
Answered by
2
Answer:
YOUR ANSWER MATE- (A) 2UNITS
Step-by-step explanation:
As we know that,
Perimeter of circle =2πr
Area of circle =πr2
Given that the perimeter and area of circle are numerically equal.
Therefore,
πr2=2πr
r2−2r=0
r(r−2)
r=0 or r=2
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Answered by
2
Step-by-step explanation:
From question,
circumference of circle = Area of circle
2πr=πr
2
⇒r=2
∴Radius=2 units.
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