Surveying
If 16 flight lines are run perpendicular to an area 30 km wide, their spacings on a photographical map on scale 1 : 50,000 , will be

3 cm
1 cm
4 cm
2 cm

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Surveying
Pick up the incorrect statement from the following. In a spherical triangle

Sum of the three angles is equal to two right angles
Sum of any two sides is greater than the third
Sum of the three angles less than six right angles and greater than two right angles
Every angle is less than two right angles

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