The Total solution for NCERT class 6-12
Answer - 1 : -
(Street Plan): A city has two main roads which cross eachother at the centre of the city. These two roads are along the North-Southdirection and East-West direction.
All theother streets of the city run parallel to these roads and are 200 m apart.There are about 5 streets in each direction. Using 1 cm = 100 m, draw a modelof the city on your notebook Represent the roads/streets by single lines.
There are many cross-streets in your model. A particularcross-street is made by two streets, one running in the North-South directionand another in the East-West direction. Each cross street is referred to in thefollowing manner: If the 2nd street running in the North-South direction and 5th in the East-West direction meet at some crossing,then we will call this cross-street (2, 5). Using this convention, find:
(i) Howmany cross – streets can be referred to as (4, 3).
Answer - 2 : -
Both the cross-streets are marked in theabove figure. It can be observed that there is only one cross-street which canbe referred as (4, 3), and again, only one which can be referred as (3, 4).