What capital city in Europe has the highest or largest urban concentration of over 10,500,000 people which makes it the sixth largest city in the world?

Moscow, Russia.

Explanation:

Moscow is the capital city of Russia. It has an estimated population of 10,500,000 people with a very low density per square mile. It is the second most populated city in Europe behind Istanbul, Turkey. The name Moscow is often thought to be derived from the Moskva River.

It has one of Europe's largest economies, and low living costs compared to other major cities.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -

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