Question

sd

Answer 1

1) 5 min = 5/60 of 1 º

[(5/60) / 360] * [2 π r] = length of subtended arc.

substitute 3960 miles for r

about 5.76 miles

Answer 2

2) First, what is 100% of the circumference of the circle?

C = 2(pi)r = 2(pi)*12 = 24(pi)

Now, only 30 degrees of the circle is being "arced." There are 360 degrees in a circle. So, the ratio being "arced."

30/360 = 1/12

So:

Arc Length = Ratio * Circumference

Arc = (1/12) * 24(pi) = 2(pi) cm

Answer 3

ok thanks