Question

map drawn to a scale of 1 cm to 10 kilometre measures 24 cm by 18 cm if the area of the land and water represented as in the ratio of 7 ratio 2 find in square kilometre the land area is represented​

Answer 1

Answer:

3360 sq.km

Step-by-step explanation:

area of map=24×18

=432 sq.cm

area of land and water presented in map = 432×10×10

=43200sq

sum of terms in ratio=7+2=9

area of land=7/9×43200

=33600sq.km

Answer 2

Answer:

$33600 km^2$

Step-by-step explanation:

Scale : 1 cm = 10 km

Map Area =$24 \times  18 cm^2 = 432 cm^2$

Using scale:

1 cm = 10 km  

=>$1 cm^2= 100 km^2$

So, Actual Area $432 \times 100 km^2$ 

Actual Area $43200  km^2$ 

We are given that Land : Water :: 7 : 2

So, The Land Area = $\frac{7}{9} \times 43200 km^2$

Land Area = $33600 km^2$

Hence the land area is  $33600 km^2$