Find the minimum value of the function f(x) = 0.8x2 +11.2x + 42 to the
nearest hundredth.

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

i'll be glad to : )

the answer is  

d.

121π mi^2

hope you got it chief