Question

Area and perimeter is equal to find the radius

Answer 1

Explanation:

for circle

2πr=πr²

2=r (πr cancel to other side πr)

Answer 2

Answer:

Correct question:-)

lf perimeter and area of a circle are equal then find the radius of the circle.

Solution:-)

We know that perimeter of a circle is given by

$perimeter = 2 \pi r$

And

area of a circle is given by

$area = \pi {r}^{2}$

ATQ,

perimeter and area equal

So ,

$2 \pi r = \pi {r}^{2} \\ \\ {r}^{2} = 2r \\ \\ {r}^{2} - 2 r = 0 \\ \\ r(r - 2) = 0 \\ \\ r = 2 \: \: \: \: or \: \: \: \: r = 0$

As r is the radius of the circle so are can't be equals to zero .

So,

r = 2 units