Latitude: Degrees to Kilometers Conversion
The distance represented by one degree ($1^{\circ}$) of latitude is consistent across the Earth because lines of latitude (parallels) are parallel circles. One degree of latitude corresponds to the distance measured along a meridian (a line of longitude).
Calculating Distance per Degree of Latitude
The Earth's circumference is approximately $40,075$ kilometers. Since a full circle consists of $360^{\circ}$, we can calculate the distance for $1^{\circ}$ of latitude by dividing the total circumference by $360$.
- Earth's Circumference: $C \approx 40,075 \text{ km}$
- Total Degrees in a Circle: $360^{\circ}$
Calculation:
Distance per degree = $\frac{\text{Earth's Circumference}}{360^{\circ}}$
Distance per degree $\approx \frac{40,075 \text{ km}}{360^{\circ}}$
Distance per degree $\approx 111.32 \text{ km}$
Approximation for Latitude
The question asks for the approximate distance. Rounding $111.32$ km gives us $111$ km.
Therefore, $1^{\circ}$ of latitude is approximately $111$ km.
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