Change the cartesian integral Integral from nothing to nothing Subscript 0 Superscript 4 Baseline Integral from nothing to nothing Subscript 0 Superscript StartRoot 4 minus (x minus 2 )squared EndRoot Baseline StartFraction x plus y Over x squared plus y squared EndFraction dy dxinto an equivalent polar integral. Then evaluate the polar integral.

 Every 1.8 degrees F is 1 degree C.  And always start at 0C = 32FSo, basically after you put value for C, add 32 afterwards. F = 1.8C + 32 From that fact, 15 C = 59 F   &   35 C = 85 F 15 < C < 35   --->   59 < F < 85 C = [15 , 35]   --->   F = [59 , 85]

did this help if so give me a thumbs up!

Thanks and i tryed to the best of my head could do.

and this video might help might help too!
https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/farenheit-celsius-conversion/v/convert...

hope all of this info helps! :)