SI: m² and pascal Mystery Cache

The International System of Units (SI), commonly known as the metric system, is the international standard for measurement. The SI plays an essential role in international commerce and is commonly used in scientific and technological research and development. This cache is part of the SI geoart that allows you to learn about the SI units. Visit the introduction cache to learn more about this geoart.

Area: square metre (m²)

The square metre is the SI derived unit of area.

Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow geometrically by the corresponding power of 10. For example, one kilometre equals 1000 metres, but one square kilometre equals 1000000 square metres, not 1000 square metres.

Pressure: pascal (Pa)

The pascal is the SI derived unit of pressure. One pascal is the pressure exerted by a force of magnitude one newton perpendicularly upon an area of one square metre.

SI prefix hecto- is commonly used with pascals, especially by meteorologists. One hectopascal (hPa) equals 100 pascals. A standard atmosphere is 1013.25 hPa, which is often used as a reference pressure.

This Geocache

In which city is GCRC4X located? Take the land area of this city in square kilometres, round down to an integer to get ABC.

251390 humans of 70 kg average mass are standing on the land of the above city. Assuming the gravity is 9.80665 m/s², how much pressure is exerted on the land in millipascals? Round it to an integer to get DEF.

Final coordinates: N 39° 08.ABC W 077° 08.DEF

You can validate your puzzle solution with certitude.

Cache container is a baby-nano with tiny log sheet. A pair of tweezers is mandatory for log retrieval. To conserve space, please omit the date and write the first two letters of your username only.

Some hides are located along a road without sidewalk. For your safety, please walk on the grass out of the car lanes, and avoid going at night without wearing a safety vest.

Lists of Caches in SI geoart

0. introduction
1. second and hertz
2. metre
3. kilogram
4. m/s and km/h
5. mole
6. radian and steradian
7. m/s² and newton
8. m² and pascal
9. joule and watt
10. ampere and coulomb
11. volt and farad
12. ohm
13. kelvin
14. candela, lumen, and lux
15. bushel
16. foreword & afterword
17. prize distribution