Seattle, wa and san francisco, ca lie on the same longitudinal line. san francisco is at 38° latitude and seattle is at 47° latitude. if the earth is a sphere of radius 4000 miles, use arc length to find the distance between the cities. [use π = 3.14, and round to the nearest mile.]

Step 1.

Calculate measure of angle α:

Step 2.

Calculate what fraction of the angle 360° is the angle α:

Step 3.

Calculate the circumference of the Earth (circle):

Step 4.

The length of arc is equal 1/40 of the circumference:

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step-by-step explanation:

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation: