need help with both a and b PLZ

Mathematics
Tutor: None Selected Time limit: 1 Day

Apr 9th, 2015

radius= 3960 miles

cos 23.5=x/3960

x= 3960cos 23.5= 3631.56 miles

perimeter= 3.142*2*3631.56= 22820.71 miles

distance of two opposite points = diameter= 7263.12 miles................................please best me

Apr 9th, 2015

thank you! this helped a ton!

Apr 9th, 2015

thank you! this helped a ton!

Apr 9th, 2015

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