choose 2 true statements
A) using Naismith's rule to plan a walk would give different times to walk up a hill as down it, on the same path.
B) On a map with a scale of 1:200 000, 5cm on the map will represent 1km on the ground
C) On a map with a scale os 1:20 000, an area of 4km2 on the ground will be represented by an area of 100cm2 on the map
D) If the bearing of a boat from a lighthouse is 030 degrees then the bearing of the lighthouse from the boat is 150degrees
E) A road gradient of 25% is exactly the same as a mathematical gradient of 0.25
F) The walking distance between 2 hill tops is likely to be the same as the distance between the 2 hill tops calculated using their grid references
Can anyone please help me. I think A is false
For Further Reading
math - bobpursley, Wednesday, May 16, 2007 at 10:53am
E is nonsense.
A is nonsense.
F is nonsense.
So work out B, C, D to see which is false. Careful on C, it is tricky.
math - claudia, Wednesday, May 16, 2007 at 11:31am
Bob
I think its' C & D because i get 10km for B not 1km. Is this correct?
a+d are right ive done this allredy on a quiz and got um right
LOL GOOD LUCK
Based on the information provided, we can determine that the true statements are:
B) On a map with a scale of 1:200,000, 5cm on the map will represent 1km on the ground.
D) If the bearing of a boat from a lighthouse is 030 degrees, then the bearing of the lighthouse from the boat is 150 degrees.
To figure out the answers, we can analyze the explanations given by Bob and Claudia.
Bob states that statements A, E, and F are nonsense. This means they are false.
Claudia suggests that statements C and D are false. She mentions that statement B is true because she calculates that 5cm on the map represents 10km on the ground, not 1km.
Therefore, statement C, which states that on a map with a scale of 1:20,000, an area of 4km² on the ground will be represented by an area of 100cm² on the map, is false.
Therefore, the correct answer is:
B) On a map with a scale of 1:200,000, 5cm on the map will represent 1km on the ground.
D) If the bearing of a boat from a lighthouse is 030 degrees, then the bearing of the lighthouse from the boat is 150 degrees.