Question

The scale of a map is 1:200000.A plot of land of area 10km² is to be represented on the map.Find (1)the length in km on the ground represented by 1 cm on the map my

Answer 1

Scale = 1 : 200,000

Find 1 cm:

1 cm : 200,000 cm

1 cm : 2000 m

1 cm : 2 km

Answer: 1 cm represents 2 km on the map

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Find the area represented by 1 km²:

1 cm : 2 km

2km : 1 cm

1 km : 0.5 cm

( 1 km )² = ( 0.5 cm )²

1 km² = 0.25 cm²

Find the area represented by 10 km²:

1 km² = 0.25 cm²

10km² = 0.25 x 10 = 2.5 cm²

Answer: 10 km² is represented by 2.5 cm² on the map