44798.2544=2*3.14*r^2+2*3.14*r*22.8

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Solution for 44798.2544=2*3.14*r^2+2*3.14*r*22.8 equation:


Simplifying
44798.2544 = 2 * 3.14r2 + 2 * 3.14r * 22.8

Multiply 2 * 3.14
44798.2544 = 6.28r2 + 2 * 3.14r * 22.8

Reorder the terms for easier multiplication:
44798.2544 = 6.28r2 + 2 * 3.14 * 22.8r

Multiply 2 * 3.14
44798.2544 = 6.28r2 + 6.28 * 22.8r

Multiply 6.28 * 22.8
44798.2544 = 6.28r2 + 143.184r

Reorder the terms:
44798.2544 = 143.184r + 6.28r2

Solving
44798.2544 = 143.184r + 6.28r2

Solving for variable 'r'.

Reorder the terms:
44798.2544 + -143.184r + -6.28r2 = 143.184r + -143.184r + 6.28r2 + -6.28r2

Combine like terms: 143.184r + -143.184r = 0.000
44798.2544 + -143.184r + -6.28r2 = 0.000 + 6.28r2 + -6.28r2
44798.2544 + -143.184r + -6.28r2 = 6.28r2 + -6.28r2

Combine like terms: 6.28r2 + -6.28r2 = 0.00
44798.2544 + -143.184r + -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'.
-7133.48 + 22.8r + r2 = 0

Move the constant term to the right:

Add '7133.48' to each side of the equation.
-7133.48 + 22.8r + 7133.48 + r2 = 0 + 7133.48

Reorder the terms:
-7133.48 + 7133.48 + 22.8r + r2 = 0 + 7133.48

Combine like terms: -7133.48 + 7133.48 = 0.00
0.00 + 22.8r + r2 = 0 + 7133.48
22.8r + r2 = 0 + 7133.48

Combine like terms: 0 + 7133.48 = 7133.48
22.8r + r2 = 7133.48

The r term is 22.8r.  Take half its coefficient (11.4).
Square it (129.96) and add it to both sides.

Add '129.96' to each side of the equation.
22.8r + 129.96 + r2 = 7133.48 + 129.96

Reorder the terms:
129.96 + 22.8r + r2 = 7133.48 + 129.96

Combine like terms: 7133.48 + 129.96 = 7263.44
129.96 + 22.8r + r2 = 7263.44

Factor a perfect square on the left side:
(r + 11.4)(r + 11.4) = 7263.44

Calculate the square root of the right side: 85.225817685

Break this problem into two subproblems by setting 
(r + 11.4) equal to 85.225817685 and -85.225817685.

Subproblem 1

r + 11.4 = 85.225817685 Simplifying r + 11.4 = 85.225817685 Reorder the terms: 11.4 + r = 85.225817685 Solving 11.4 + r = 85.225817685 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-11.4' to each side of the equation. 11.4 + -11.4 + r = 85.225817685 + -11.4 Combine like terms: 11.4 + -11.4 = 0.0 0.0 + r = 85.225817685 + -11.4 r = 85.225817685 + -11.4 Combine like terms: 85.225817685 + -11.4 = 73.825817685 r = 73.825817685 Simplifying r = 73.825817685

Subproblem 2

r + 11.4 = -85.225817685 Simplifying r + 11.4 = -85.225817685 Reorder the terms: 11.4 + r = -85.225817685 Solving 11.4 + r = -85.225817685 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-11.4' to each side of the equation. 11.4 + -11.4 + r = -85.225817685 + -11.4 Combine like terms: 11.4 + -11.4 = 0.0 0.0 + r = -85.225817685 + -11.4 r = -85.225817685 + -11.4 Combine like terms: -85.225817685 + -11.4 = -96.625817685 r = -96.625817685 Simplifying r = -96.625817685

Solution

The solution to the problem is based on the solutions from the subproblems. r = {73.825817685, -96.625817685}

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