Mathematics for IGCSE & O level - Scale Drawings (Section 2)
1
On a map, the distance between two cities is 6 cm. The scale is 1 cm = 10 km. What is the actual distance?
คำตอบ
(D)
60 km
2
If a scale of a map is 1 cm to 20 km. How many cm would represent 90 km?
คำตอบ
(A)
4.5
3
What does the term 'bearing' describe?
คำตอบ
(B)
Direction
4
If a bearing is 190°, how is the reverse bearing calculated?
คำตอบ
(B)
Subtracting 180°
5
If the bearing of point X from point Y is 030°, what is the approximate bearing of Y from X?
คำตอบ
(D)
330°
6
Which items are essential for creating an accurate scale drawing?
คำตอบ
A
C
7
What is the bearing measurement direction on a compass?
คำตอบ
(C)
Clockwise from North
8
If the scale is 1 cm: 10 km and the distance on a map is 2.5 cm, what is the actual distance?
คำตอบ
(C)
25 km
9
Which instrument is essential for measuring and constructing angles to calculate bearings?
คำตอบ
(C)
Protractor
10
Which of the following are used to describe direction?
คำตอบ
(B)
Bearings
11
Which of the following is a key feature of scale drawings?
คำตอบ
(C)
They have the same shape as the object they represent.
12
A scale drawing of a truck has a scale of 1 cm to 2 m. If the truck on the drawing is 4 cm long, what is the actual length of the truck?
คำตอบ
(D)
8 m
13
The scale on a map is 1 cm to 2.5 km. Two points are 6 cm apart on the map. What is the actual distance between the two points?
คำตอบ
(D)
15 km
14
In the context of scale drawings, what does the scale of the drawing allow you to do?
คำตอบ
(B)
To determine the actual size.
15
A plan of a building has a scale of 1 cm to 2 m. A wall is 3.5 cm long on the plan. How long is the wall in real life?
คำตอบ
(C)
10.5 m
16
What do we call the angle we use to describe directions?
คำตอบ
(C)
Bearing
17
What is a scale used for in a drawing?
คำตอบ
(B)
To find the true size of the original object.
18
On a plan of a house, a room is 5 cm by 4 cm. If the scale is 1 cm to 2.5 m, what is the real area of the room?
คำตอบ
(C)
50 m²
19
If a room measures 4 cm by 6 cm on a scale drawing where 1 cm represents 3 m, what is the real-life area of the room?
คำตอบ
(B)
72 m²
20
What is the scale if 1 cm on the drawing represents 10 km in real life?
คำตอบ
(D)
1 cm to 10 km
21
If the bearing of X from Y is 120 degrees, what is the bearing of Y from X?
คำตอบ
(C)
240 degrees
22
If the bearing is greater than 180°, how do you calculate the reverse bearing?
คำตอบ
(B)
Subtract 180°
23
If the bearing of point A from point B is 060°, what is the bearing of point B from point A?
คำตอบ
(D)
300°
24
What are bearings used to describe?
คำตอบ
(D)
Direction
25
What is the reverse bearing if a bearing is 300°?
คำตอบ
(B)
120°
26
What is the main purpose of bearings in navigation?
คำตอบ
(D)
To determine direction
27
In a scale drawing, what represents the size of the drawing compared to the actual size?
คำตอบ
(B)
The scale
28
A map uses a scale of 1 cm to 50 km. Two points are 3.5 cm apart on the map. What is the actual distance between the two points?
คำตอบ
(B)
175 km
29
A rectangle has dimensions 2 cm by 3 cm on a scale drawing. If the scale is 1 cm = 4 m, what is the actual area?
คำตอบ
(B)
48 m²
30
If the scale of a drawing is 1:50, what does 2 units on the drawing represent in reality?
คำตอบ
(D)
100 units
31
What is the angle measurement for the direction 'East' in terms of bearing?
คำตอบ
(B)
090°
32
The real-life width of a room is 6m. On a scale drawing with a scale of 1 cm to 3 m, what will the width of the room be?
คำตอบ
(B)
2 cm
33
A drawing of a garden uses a scale of 1 cm to 3 m. The garden path is 4.5 cm long on the drawing. What is the real-life length of the path?
คำตอบ
(C)
13.5 m
34
What do bearings use as a reference point?
คำตอบ
(D)
North
35
What is the real distance if a distance on a map is 4.2 cm and the scale is 1 cm to 7 km?
คำตอบ
(D)
29.4 km
36
If a boat leaves port on a bearing of 285°, in which direction is the boat sailing?
คำตอบ
(C)
North-West
37
What does the 'scale' of a drawing define?
คำตอบ
(C)
The ratio of drawing size to actual size
38
On a map, the distance between two cities is 10 cm. If the map scale is 1 cm:25 km, what is the actual distance in kilometers?
คำตอบ
(C)
250 km
39
What is the correct way to measure a bearing?
คำตอบ
(C)
Clockwise from North
40
Which elements are most important in scale drawings?
คำตอบ
A
B
C
41
What tool is necessary to accurately measure bearings?
คำตอบ
(C)
A protractor
42
A park's dimensions are 10 cm by 15 cm on a map with a scale of 1 cm to 100 m. What is the park's real area in square kilometers?
คำตอบ
(A)
1.5 km²
43
What is the bearing if an object is directly West?
คำตอบ
(D)
270°
44
In a scale drawing, is the shape always the same as the object?
คำตอบ
(A)
Yes
45
What is the term for a drawing where the shape is preserved, but size differs?
คำตอบ
(B)
Scale drawing
46
If you know the bearing of a point from a location, and need to find the bearing of the location from the point, what mathematical operation will you likely use?
คำตอบ
(C)
Addition or subtraction of 180 degrees.
47
What tool would be most appropriate for measuring the length of lines in a scale drawing?
คำตอบ
(B)
Ruler
48
A real-life distance is 40 km. On a map with a scale of 1 cm to 8 km, what will the distance be on the map?
คำตอบ
(C)
5 cm
49
What is the bearing of South?
คำตอบ
(C)
180°
50
What is the main advantage of a scale drawing?
คำตอบ
(B)
It accurately represents the size of the real object.
