Plz Help!!!!!! Geometry Question

[mandy927]

I cannot figure out this problem! :mad: Plz Help!!!! Take a look. "The longitude of a geographic location is measured in degrees east (E) or west(W) from the prime meridian(0°) to the international date line (180°). Quito, Ecuador, on the west coast of South America, has a longitude of 78.5°W. Singapore, on the Malay Peninsula in Asia, has a longitude of 104°E. Both cities are very close to the equator. (Assume they are on the equator for this problem.) The diameter of Eath at the equator is 7928 miles. What is the shortest distance from Quito to Singapore?" :confused:

[uart]

You need to use L = R * Theta for the length of the arc. Just be sure to convert those measurements in degrees into radians before using the formula.