I thought I remembered my algebra from a half century ago. I don't.

Is it possible to solve the equation below fora? <--- CORRECTION: initial post said "c" here. That was a mistake. I meant "a"

a^2 + (1.3a)^2 = c^2

Why? Because I'm trying to constrain (crop) an image to have a certain number of pixels. 1.3 is the image's aspect ratio. So the Pythagorean b is equal to 1.3a

So the above is the Pythagorean formula:

Width^2 * (1.3 * Width)^2 = Total_Pixels^2

TIA

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