'Measuring longitude at the equator 1 of these equals 69.17 miles'
a degree
WEIGHTS & MEASURES: Measuring longitude at the equator 1 of these equals 69.17 miles
Measuring longitude at the equator 1 of these equals 69.17 miles
Measuring longitude at the equator 1 of these equals 69.17 miles
WEIGHTS & MEASURES
a degree
WEIGHTS & MEASURES