Question

Easy question about a circle :)

Answer 1

Answer:

Radius of Circle

radius =\sqrt{(x2-x1)^{2} +(y2-y1)^{2} }

radius = \sqrt{(-3+2)^{2} + (-1 -1)^{2} }

radius = \sqrt{(-1)^{2} +(-2)^{2}}

radius = \sqrt{5}

radius = 2.24

The radius of this circle is 2.24

Cir = 2 x pi * 2.24

Cir = 2 x 3.14 *2.24

Cir = 4.47 x pi

Cir = 14.04

(bc i said so)

Answer 2

Radius of Circle

radius =
`\sqrt{(x2-x1)^(2) +(y2-y1)^(2) }`

radius =
`\sqrt{(-3+2)^(2) + (-1 -1)^(2) }`

radius =
`\sqrt{(-1)^(2) +(-2)^(2)}`

radius =
`√(5)`

radius = 2.24

The radius of this circle is 2.24

Cir = 2 x pi * 2.24

Cir = 2 x 3.14 *2.24

Cir = 4.47 x pi

Cir = 14.04

Explanation: