Let's go through the math concepts required to answer these questions step by step:
1.1
The scale of a plan is 1:20
1.1.1 Explain the meaning of the given scale.
A scale of 1:20 means that for every unit of measurement on the plan or map, the actual feature is 20 times larger in the real world. So, if something is drawn with a length of 1 cm on the plan, its actual length would be 20 cm in the real world.
1.1.2 If the length of an item on the plan is 185 mm, determine the actual length of this item in metres
To determine the actual length when the plan length is 185 mm using a 1:20 scale, we multiply the length on the plan by the scale factor. The scale factor here is 20, which means each mm on the plan represents 20 mm in reality.
Actual length in mm = Plan length in mm × Scale factor
Actual length in mm = 185 mm × 20
Actual length in mm = 3700 mm
To convert this to metres, we divide by 1000 (since there are 1000 mm in 1 metre):
Actual length in metres = 3700 mm ÷ 1000
Actual length in metres = 3.7 metres
So, the actual length of the item is 3.7 metres.
1.2 Katleho went to Mangaung Community Library to study how scales are used in Maps.
1.2.1 Give in order the names of the two scales represented above.
The two scales represented above are:
Scale 1: "[1:100]" is called a "ratio scale" or "representative fraction (RF)." It expresses the scale of a map as a simple ratio or fraction.
Scale 2: "[0m 10m 20m]" is typically referred to as a "bar scale" or "graphical scale." It uses a graphical representation to show the scale on the map physically, often as a line marked with distances.
1.2.2 Complete the statement below by choosing the appropriate answer from the given A-C.
Unfortunately, without the actual statement and options A, B, C provided, I can't complete the statement. To address this question, the full statement and options would be needed, and then one could determine the appropriate choice based on the context of the provided material regarding map scales.
