5. (9 pts) Imagine you repeat Eratosthenes' experiment -- but using the cities of Syene and Kiev, Ukraine (farther north than Alexandria). You use a pillar of the same height -- is the shadow longer or shorter in Kiev than in Alexa n dria at the same time on the same day? Using your shadow measurements, let's say you find that the angle between Kiev and Syene is 24.0 degrees. You have also measure d that Kiev is 2650 km due north of Syene. What do you calculate for the circumference of the Earth?