If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
100 = 3.14r2
Solving
100 = 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.
100 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
100 + -3.14r2 = 0.00
Add '-100' to each side of the equation.
100 + -100 + -3.14r2 = 0.00 + -100
Combine like terms: 100 + -100 = 0
0 + -3.14r2 = 0.00 + -100
-3.14r2 = 0.00 + -100
Combine like terms: 0.00 + -100 = -100
-3.14r2 = -100
Divide each side by '-3.14'.
r2 = 31.84713376
Simplifying
r2 = 31.84713376
Take the square root of each side:
r = {-5.64332648, 5.64332648}
| 7y-3=2y-20 | | 8(-2)-45x=10 | | -2x-4y=-46 | | log(3)x=log(3)2+log(3)8-log(3)4 | | 5x^2+21x-9= | | 4.25x+4=4.5x+5 | | 7x^2+49x+84=0 | | 234x-67=578 | | 2x-24=124 | | e+5k-3e-6k= | | 6x-9=4x-7 | | 2x-67=78 | | 2x-24=12 | | 8x-7y=19 | | a+2b-3a+4b= | | m-3m-4m+m= | | 7+10*5= | | 3*3+1= | | 4(0.67-1)+2(0.67+3)=6 | | 4x^2-20x-1=-26 | | x^2+y^2+2x+8y-32=0 | | 4x^2+8x-44=0 | | x^2-9x=5 | | 4(x-1)+2(x+3)=6 | | x^2+14x-4=0 | | (2+2)*2=x | | X^6+3x^4+3x^2+2=0 | | (2+2)*2= | | 34+45= | | 2x^2+8=4x | | 5(x-5)=23-3x | | 20x+3=103 |