Use Green's Theorem...

a = √ x^2 + y^2 or a = −√x^2 + y^2

Step-by-step explanation:

Let's solve for a.

x2 + y2 = a2

Step 1: Flip the equation.

a2 = x2 + y2

Step 2: Take square root.

final a = √x2 + y2 or a = −√x2 + y2

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previous answer in the same question.

a = √x^2 + y^2

       OR

a = − √x^2 + y^2

Step-by-step explanation:

a^2 = x^2 + y^2

a = √x^2 + y^2

       OR

a = − √x^2 + y^2

Hope this helps!

answer:

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