4 °C
i just googled it XD. source: https://www.google.com/search?q=the+density+of+water+is+maximum+at+which+temperature&oq=the+density+of+water+is+maximum+at+which+temperature&aqs=chrome..69i57.699j0j4&client=ms-android-samsung&sourceid=chrome-mobile&ie=UTF-8
$54/$89 means she has dared 60.6742% or you can round to 60.67%
Answer:
23
hope it helped you!!
BTW, angle 1 + angle 2 = 180
Intersecting point 4,2 with slope of 1/2