A city has two main roads meeting at centre of the city. These two roads are along the North-South direction and East-West direction. All other streets of the city run parallel to main road and are $300 m$ apart. There are about four streets in each direction. There are many cross- streets in your model. A particular cross-street is made by two streets. One running in the North-South and another in the East-West direction. Each cross-street is referred to in the following manner. If the 4th street running in the North-South direction and 2nd in the East-West direction meet at some crossing, then we will call this as cross-street as $(5, 2) .$ Which mathematical concept is used to solve the above problem?

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Algebraic polynomial

Cartesian geometry

Pythagoras theorem

None of the above

answer is B.

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Detailed Solution

Given streets of a city which are parallel in North-South and East-West direction.
To solve this type of problem use Cartesian coordinate system
Every unit on the graph represents

300 m

Here,
1 is first street in North-South direction and horizontal is in East-West direction.
2 is second street in North-South direction and horizontal is in East-West direction.
3 is third street in North-South direction and horizontal is in East-West direction.
4 is fourth street in North-South direction and horizontal is in East-West direction.
In graph (5,2) is marked.
The problem is framed into a Cartesian coordinate system.
So, coordinate geometry is used to solve the above problem
Therefore, option (2) is correct.

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