9) Mohan was going to his grandfather’s house which is 4500m towards east from his house. In the evening, instead of returning to his house his goes to his uncle’s house which is 1500m towards west from his grandfather’s house. What is the total distance travelled by him and how much far away he is now from his house? Is it better to walk than to travel by car to cover small distances?
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Answer:
as Mohan goes to his grand father house which is 4500m east then from his house he goes 1500m east which means he was walking back to his house so the total distance cover by him was 6000 and he was 3000m far from his house
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Answer:
Total distance travelled = 4500 m + 1500 m
= 6000m or 6 km
As he makes a triangle while travelling ,
(4.5 km)^2 * (1.5 km)^2 = Distance^2
20.25 * 2.25 = Distance^2
45.5625 = Distance^2
√45.5625 = Distance
Distance = 6.75 km or 6750 m
It is better to walk rather than using a car to cover small distances because it does not caused pollution and keeps the environment safe and healthy .
Thanks.
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