If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
1628.6845 = 3.14*(4/3)*r^3 // - 3.14*(4/3)*r^3
1628.6845-(3.14*(4/3)*r^3) = 0
1628.6845-4.18666667*r^3 = 0
-4.18666667*r^3 = -1628.6845 // : -4.18666667
r^3 = 389.0169981
r^3 = 389.0169981 // ^ 1/3
r = 389.0169981^(1/3)
r = 389.0169981^(1/3)
| V=4/3*3.14*11.9^3 | | -5ln(6x+13)+29=4 | | 3(1-2x)=7 | | 12x=10x+40 | | Y^2+256=0 | | 22437.9167=4/3*3.14*r^3 | | 3(1-2x)-4=5-6(x+1) | | -4(8+3n)+2= | | 5x+7+2x+3=180 | | -2+t=49 | | 3x/7=9/5 | | 5(w+12)=5w+60 | | V=4/3*3.14*6.4^3 | | h(x)+6=3x | | 1/45=2/5t | | (3x+4y)*(3x+4y)= | | 05+10=06(x+50) | | 4y+22=8y+14 | | 816.8689=4/3*3.14*r^3 | | 20+4x+10=90 | | 15=10+.4(x-10) | | -2(8x+2)=-16x+20 | | -8x+4=5x-11 | | 7-5a=-3 | | 13=10+.2(x-10) | | 2y^2+12y-12=0 | | 12.1+x-8.2=99 | | 15+5k-6d=0 | | 3/5-t/5=3 | | 3x+3z=3 | | 381.51=4/3*3.14*r^3 | | 6-4z+3z+2= |