Why do cartographers use map projections

In other words, a map projection systematically renders a 3D ellipsoid (or spheroid) of Earth to a 2D map surface. ... Because you can't display 3D surfaces perfectly in two dimensions, distortions always occur. For example, map projections distort distance, direction, scale, and area.

In cartography, a map projection is a way to flatten a globe's surface into a plane in order to make a map. This requires a systematic transformation of the latitudes and longitudes of locations from the surface of the globe into locations on a plane.

Top 10 World Map Projections

-Mercator. This projection was developed by Gerardus Mercator back in 1569 for navigational purposes. ...

-Robinson. This map is known as a 'compromise', it shows neither the shape or land mass of -countries correct. ...

-Dymaxion Map. ...

-Gall-Peters. ...

-Sinu-Mollweide. ...

-Goode's Homolosine. ...

-AuthaGraph. ...

-Hobo-Dyer.

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answer: option d : 3.85 units

step-by-step explanation: in the given figure the blue line is diameter   .the diameter is the blue line which equals 7.7 units.radius is half of diameter .radius = 7.7÷2=3.85 units.

option d is the right answer.

explanation:

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