Question

In a city, nearly half of its land is used as a residential area, two-fifth of the remaining land is green and the rest 447 km2 of land area is used for commercial, industrial and public facilities. (i) Find the total land area of the city. (ii) Also, find the area of green land in km2 and m2.

Answer 1

Answer:

i)total area of land=4470

ii)now area of green land=1788 km2 and 1.788 m2

Step-by-step explanation:

let total area of land be X

so  area for residential areas = X/2

green area= 2/5 X

remaining area = X-{(X/2)+(2/5 X)}

=X/10 now X/10=447 km2

X=4470

ii)now area of green land=2/5X

=1788 km2 and 1.788 m2