Question

if radii of two concentric circle are 28 cm and 18 cm respectively. if the perimeter and the area of the circle are numerically equal. then find the radius of the circle.​

Answer 1

Answer:

2

Step-by-step explanation:

As we know that,

Perimeter of circle =2πr

Area of circle =πr

2

Given that the perimeter and area of circle are numerically equal.

Therefore,

πr

2

=2πr

r

2

−2r=0

r(r−2)

⇒r=0 or r=2

Answer 2

Answer:

ANSWER IN ABOVE CLIP

Step-by-step explanation:

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