PLEASE HELP

Find the distance along an arc on the surface of the earth that subtends a central angle of 2 minutes (1 minute = 1/60 degree). The radius of the earth is 3960 miles.

Question

PLEASE HELP

Find the distance along an arc on the surface of the earth that subtends a central angle of 2 minutes (1 minute = 1/60 degree). The radius of the earth is 3960 miles.

anonymous · Answer

i tried it and got 829.381 (rounded up) and it wasn't right...

anonymous · Answer

If the radius of the Earth is 3960 miles, then its circumference is 2*pi*3960 miles. Two minutes is 2/60 of a degree, which is 2/(360*60) of the circumference. So, 2/(360*60)*2*pi*3960 = 2.30 miles.

anonymous · Answer

I think you forgot to divide by 360.

anonymous · Answer

it says its wrong... and i only have 1 try left...

anonymous · Answer

It says my answer is wrong?

anonymous · Answer

but it seems right...

anonymous · Answer

ya it says its wrong

anonymous · Answer

oh i had to round it out to 3 numbers... thx :)

anonymous · Answer

Oh, good.