Mathematics for IGCSE & O level - Mensuration (Section 7)
1
If the length and width of a rectangle are given in millimeters, what is the correct unit to state the area?
คำตอบ
(C)
mm²
2
A sphere has a surface area of 1274 cm². Calculate its radius.
คำตอบ
(A)
10 cm
3
Which of the following is a unit of volume?
คำตอบ
(C)
cm³
4
Find the radius of a sphere with a surface area of 153.9 cm².
คำตอบ
(A)
2 cm
5
A trapezium has parallel sides of 6 cm and 10 cm, and a height of 4 cm. What is the area of the trapezium?
คำตอบ
(B)
16 cm²
6
Calculate the base area of a cone with slant height 8.3 cm and curved surface area 52 cm²
คำตอบ
(A)
25 cm²
7
Calculate the volume of a sphere with radius 6cm.
คำตอบ
(A)
904.3 cm³
8
The volume of a cone is 50 cm³. If you triple the radius and keep the height the same, what is the new volume?
คำตอบ
(C)
300 cm³
9
Which of the following is an example of a 3-dimensional shape?
คำตอบ
(C)
A sphere
10
What is the area of a triangle with a base of 8 cm and a height of 5 cm?
คำตอบ
(A)
20 cm²
11
In calculating the volume of a prism, what is a key factor?
คำตอบ
A
C
12
A shape is made from a combination of rectangles. How would you find the area?
คำตอบ
(B)
Add the areas of the individual rectangles.
13
How many sides does a cube have?
คำตอบ
(B)
6
14
What units are used to measure the perimeter of a shape?
คำตอบ
(C)
Linear units
15
A solid cone has base radius of 6.5 cm and a height of 6.3 cm. Calculate its total surface area.
คำตอบ
(C)
334.4 cm²
16
If you need to calculate the amount of paint required for a wall, what are you calculating?
คำตอบ
(B)
Area
17
A cone has base radius 5 cm and a perpendicular height of 12 cm. Calculate for curved surface area.
คำตอบ
(A)
154.5 cm²
18
Which of the following can be used to calculate the circumference of a circle?
คำตอบ
A
B
19
If the radius of a circle is 7cm, what is its approximate circumference?
คำตอบ
(A)
44 cm
20
What is the area of a triangle with a base of 4 meters and a height of 6 meters?
คำตอบ
(B)
12 m²
21
A cone has a base radius of 5 cm and a perpendicular height of 12 cm. Calculate for curved surface area.
คำตอบ
(B)
204.2 cm²
22
What shape has a volume?
คำตอบ
(D)
Sphere
23
If you have a shape that isn't a standard shape, what's one way to calculate its area?
คำตอบ
(C)
Try to divide the shape into simpler shapes.
24
Which of the following best describes 'area'?
คำตอบ
(C)
The amount of surface covered by a 2D shape
25
What is the volume of a cone with a radius of 3 cm and a height of 5 cm?
คำตอบ
(A)
47.1 cm³
26
What geometric shape is used to find the area of a circle?
คำตอบ
(D)
Circle
27
What is the perimeter of a square with sides of 9cm?
คำตอบ
(B)
36 cm
28
What is the difference between circumference and perimeter?
คำตอบ
(B)
Circumference is the perimeter of a circle, perimeter is for other shapes.
29
What does 'π' represent in geometric calculations?
คำตอบ
(C)
The ratio of a circle's circumference to its diameter
30
How do you determine the area of a compound shape made of rectangles?
คำตอบ
(B)
Split the shape into smaller rectangles, calculate the area of each, and sum the areas.
31
A rectangle has an area of 72 cm² and a length of 9 cm. What is the width?
คำตอบ
(B)
8 cm
32
What is the area of a triangle with base 10cm and height 8cm?
คำตอบ
(A)
40 cm²
33
How is the area of a parallelogram calculated?
คำตอบ
(C)
Base * height
34
A solid cone has base radius of 5.3 cm and a height of 6.1 cm. Calculate the total surface area of a hemisphere with radius 7.1 cm and diameter 4.7 cm.
คำตอบ
(B)
287.6 cm²
35
What is the area of a square with sides of 9cm?
คำตอบ
(C)
81 cm²
36
A parallelogram has a base of 10cm and a height of 5cm. If the base is increased by 2cm, what is the new area?
คำตอบ
(B)
60 cm²
37
What is the volume of a rectangular prism with length 5 cm, width 3 cm, and height 4 cm?
คำตอบ
(C)
60 cm³
38
A trapezium has an area of 24 cm². The parallel sides are 4 cm and 8 cm. What is the height?
คำตอบ
(B)
4 cm
39
Which of these statements about calculating area are correct?
คำตอบ
A
C
D
40
What type of units do we use to express the area of a shape?
คำตอบ
(C)
Square units
41
The volume of a cylinder is 400 cm³. Its radius is 5.3 cm. Calculate its height.
คำตอบ
(A)
4.5 cm
42
The area of a trapezium can be found using the formula: 1/2 * (a+b) * h. What do 'a' and 'b' represent?
คำตอบ
(B)
The two parallel sides.
43
If you double the base of a triangle and keep the height the same, how does the area change?
คำตอบ
(B)
The area doubles.
44
Which of the following is a unit used to measure volume?
คำตอบ
(C)
cm³
45
The surface area of a hemisphere has an area of 9π cm². Calculate the curved surface area.
คำตอบ
(C)
18π cm²
46
A rectangular garden is 10 meters long and 7 meters wide. How many meters of fencing are needed to enclose the garden?
คำตอบ
(B)
34 meters
47
What information is needed to find the area of a triangle?
คำตอบ
A
B
48
Which shapes have two parallel sides?
คำตอบ
A
C
D
49
The area of a rectangle is found by multiplying its length and width. What type of units would be the correct for area?
คำตอบ
(B)
Square units
50
What is the term for the distance around a 2D shape?
