Question

lf radii of two concentric circle are 28cm and 18cm respectively.lf the perimeter and the areas of the circles are humerically equal.then find the radius of the circle​

Answer 1

Answer:

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Given,

The perimeter and the area of the circle are equal.

To find,

The radius of the circle.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Let, the radius of the circle = r unit

Area of the circle = πr² sq. unit

Perimeter of the circle (circumference) = 2πr cm

According to the data mentioned in the question,

πr² = 2πr

πr²/πr = 2

r = 2

Answer 2

Answer:

28cm is the radius of circle