a map drawn to a scale of 1 cm to10 km measures 24 cm by 18 cm .if the areas of the land and water represented are in ratio of 7:2 ,find in square km, the land area represented.
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Step-by-step explanation:
=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
Answered by
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Answer:
Scale 1 cm = 10 km
Area on map = 24 cm by 18 cm
- 243 cm * 18 cm
- = 432 cm square
- Actual area = 432* (10 *10)
- = 43200 km square
Ratio of land water = 7:2
The constant of proportionally be x
7x + 2x = 432000 km Square
9 x = 432000 km square
X = 432000 / 9
X = 4800
Area of land 7x = 7 * 4800 km square
= 34600 km square.
Hope it is helpful.....
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