257.48=3.14*r^2

Simple and best practice solution for 257.48=3.14*r^2 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 257.48=3.14*r^2 equation: 


Simplifying
257.48 = 3.14r2

Solving
257.48 = 3.14r2

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-3.14r2' to each side of the equation.
257.48 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
257.48 + -3.14r2 = 0.00

Add '-257.48' to each side of the equation.
257.48 + -257.48 + -3.14r2 = 0.00 + -257.48

Combine like terms: 257.48 + -257.48 = 0.00
0.00 + -3.14r2 = 0.00 + -257.48
-3.14r2 = 0.00 + -257.48

Combine like terms: 0.00 + -257.48 = -257.48
-3.14r2 = -257.48

Divide each side by '-3.14'.
r2 = 82

Simplifying
r2 = 82

Take the square root of each side:
r = {-9.055385138, 9.055385138}

See similar equations:

| 3x+3(7x-4)=-132 | | 3(6-x)-26=17x-4(2+5x) | | -4(x+3)+4=(6x+4)+1 | | 2/7x-10=-62/7 | | b-(-178)=-65 | | 28=-(2p-16) | | (x+35)+(x+15)+(2x-20)+2x+90=360 | | -17-6x=-6 | | 946-b=343 | | (x)(5)+3=48 | | v^5-10= | | (x+35)+(x+15)+(2x+20)+2x+90=360 | | -4(x+3)+4=6(x+4)+1 | | -[3z-(13z+6)]=6+(9z+1) | | (x+35)+(x+15)+(x+15)+(2x+20)+2x+90=360 | | -7/x=6 | | b-(-215)=912 | | 10/n=9/13 | | 3x^2-55=0 | | b-(-4)=-6 | | (x+35)+(x+15)+(2x+15)+(2x+20)+2x+90=360 | | (x-20)+x=180 | | 4r+7=18r+14 | | 4/9x=7/4 | | 73-b=67 | | 38=17a | | y=ln[(x+1)(2x-1)] | | -3(m+2)-m-5=-4(m+5)+9 | | b+-11=3 | | 8x-24-15+18=4x+4-36+6x+25 | | 0.6x-0.6(5-x)=4.8 | | -10+b=-9 |

Equations solver categories