en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

circumference x^2+y^2=81

Solution

circumference

x^{2} + y^{2} = 81

Solution

C = 18 π

Solution steps

C = 2 π r

Find the radius

Radius given

x^{2} + y^{2} = 81 : r = 9

C = 2 π 9

Refine

C = 18 π

Popular Examples

circumference y^2=4-x^2 circumference

y^{2} = 4 - x^{2}

circumference x^2+y^2+4x-6y+12=0 circumference

x^{2} + y^{2} + 4 x - 6 y + 12 = 0

circumference (x-2)^2+(y+6)^2=16 circumference

(x - 2)^{2} + (y + 6)^{2} = 16

circumference x^2-12x+y^2-8y=6 circumference

x^{2} - 12 x + y^{2} - 8 y = 6

circumference x^2+y^2+10x-4y-7=0 circumference

x^{2} + y^{2} + 10 x - 4 y - 7 = 0

Frequently Asked Questions (FAQ)

What is the circumference x^2+y^2=81 ?
The circumference x^2+y^2=81 is C=18pi