47533.2=2*3.14*r^2+2*3.14*r*232

Simple and best practice solution for 47533.2=2*3.14*r^2+2*3.14*r*232 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 47533.2=2*3.14*r^2+2*3.14*r*232 equation:


Simplifying
47533.2 = 2 * 3.14r2 + 2 * 3.14r * 232

Multiply 2 * 3.14
47533.2 = 6.28r2 + 2 * 3.14r * 232

Reorder the terms for easier multiplication:
47533.2 = 6.28r2 + 2 * 3.14 * 232r

Multiply 2 * 3.14
47533.2 = 6.28r2 + 6.28 * 232r

Multiply 6.28 * 232
47533.2 = 6.28r2 + 1456.96r

Reorder the terms:
47533.2 = 1456.96r + 6.28r2

Solving
47533.2 = 1456.96r + 6.28r2

Solving for variable 'r'.

Reorder the terms:
47533.2 + -1456.96r + -6.28r2 = 1456.96r + -1456.96r + 6.28r2 + -6.28r2

Combine like terms: 1456.96r + -1456.96r = 0.00
47533.2 + -1456.96r + -6.28r2 = 0.00 + 6.28r2 + -6.28r2
47533.2 + -1456.96r + -6.28r2 = 6.28r2 + -6.28r2

Combine like terms: 6.28r2 + -6.28r2 = 0.00
47533.2 + -1456.96r + -6.28r2 = 0.00

Begin completing the square.  Divide all terms by
-6.28 the coefficient of the squared term: 

Divide each side by '-6.28'.
-7568.980892 + 232r + r2 = 0

Move the constant term to the right:

Add '7568.980892' to each side of the equation.
-7568.980892 + 232r + 7568.980892 + r2 = 0 + 7568.980892

Reorder the terms:
-7568.980892 + 7568.980892 + 232r + r2 = 0 + 7568.980892

Combine like terms: -7568.980892 + 7568.980892 = 0.000000
0.000000 + 232r + r2 = 0 + 7568.980892
232r + r2 = 0 + 7568.980892

Combine like terms: 0 + 7568.980892 = 7568.980892
232r + r2 = 7568.980892

The r term is 232r.  Take half its coefficient (116).
Square it (13456) and add it to both sides.

Add '13456' to each side of the equation.
232r + 13456 + r2 = 7568.980892 + 13456

Reorder the terms:
13456 + 232r + r2 = 7568.980892 + 13456

Combine like terms: 7568.980892 + 13456 = 21024.980892
13456 + 232r + r2 = 21024.980892

Factor a perfect square on the left side:
(r + 116)(r + 116) = 21024.980892

Calculate the square root of the right side: 144.99993411

Break this problem into two subproblems by setting 
(r + 116) equal to 144.99993411 and -144.99993411.

Subproblem 1

r + 116 = 144.99993411 Simplifying r + 116 = 144.99993411 Reorder the terms: 116 + r = 144.99993411 Solving 116 + r = 144.99993411 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-116' to each side of the equation. 116 + -116 + r = 144.99993411 + -116 Combine like terms: 116 + -116 = 0 0 + r = 144.99993411 + -116 r = 144.99993411 + -116 Combine like terms: 144.99993411 + -116 = 28.99993411 r = 28.99993411 Simplifying r = 28.99993411

Subproblem 2

r + 116 = -144.99993411 Simplifying r + 116 = -144.99993411 Reorder the terms: 116 + r = -144.99993411 Solving 116 + r = -144.99993411 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-116' to each side of the equation. 116 + -116 + r = -144.99993411 + -116 Combine like terms: 116 + -116 = 0 0 + r = -144.99993411 + -116 r = -144.99993411 + -116 Combine like terms: -144.99993411 + -116 = -260.99993411 r = -260.99993411 Simplifying r = -260.99993411

Solution

The solution to the problem is based on the solutions from the subproblems. r = {28.99993411, -260.99993411}

See similar equations:

| -v=9v | | 3k-4/6=5/6 | | 11.16-16.2k=-19.2k-6.54 | | 3k-4/10=5/4 | | 10x^2+9=6x | | 5p+4q+p= | | -4-h=9h-4 | | 1/3x-2/7=3/7 | | 8x(-x^2+3x-4)=0 | | 5/4=3k-4/10 | | 3x+7-x=9 | | 3a(a-4)-2a+7= | | X/10-6=9 | | 10n-2n-10n=16 | | -m=-2m+5 | | -3a+11=3a-1 | | 3/5-2/3y=1/6 | | 150+80=470 | | 1/3(15-9×)=4x-2 | | -4u=6-3u | | -2(n+3)-5=8 | | 4x^3-49x-60=0 | | x/7-11=9 | | (3x+4)(x+9)=53x+39 | | 6x^2+21+9=0 | | 156=8v-4(1-6v) | | 8-3/8 | | 6x^2+10x-7=0 | | -2(x+3)=5(x-7) | | 10y+4-7y+3=-14 | | -8r=9r | | 5=-3+22 |

Equations solver categories