2007 - WAEC Mathematics Past Questions and Answers - page 4
31
A chord of length 6cm is drawn in a circle of radius 5cm. Find the distance of the chord from the centre of the circle.
A
2.5cm
B
3.0cm
C
3.5cm
D
4.0cm
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32
The area of a square field is 110.25m2. Find the cost of fencing it round at N75.00 per metre
A
N1,575.00
B
N3,150.00
C
N4,734.30
D
N8,268.75
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33
A sector of a circle of radius 14cm containing an angle 60o is folded to form a cone. Calculate the radius of the base of the cone
A
5\(\frac{1}{2}cm\)
B
4\(\frac{2}{3}cm\)
C
3\(\frac{1}{2}cm\)
D
2\(\frac{1}{3}cm\)
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34
Find the volume of a solid cylinder with base radius 10cm and height 14cm.
A
2203
B
880cm3>
C
1400cm3
D
4400cm3
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35
Each of the interior angle of a regular polygon is 162o. How many sides has the polygon?
A
8
B
12
C
16
D
20
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36
In a , < PQR = < PRQ = 45o. which of the following statements is/are correct? i. \(\bigtriangleup\)PQR is an equalateral triangle ii. \(\bigtriangleup\)PQR is an isosceles triangle iii. \(\bigtriangleup\)PQR is a right-angled triangle
A
ii only
B
i and ii only
C
ii and iii only
D
i and ii only
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37
The table above gives the distribution of the marks of a number of students in a test.
\(\begin{array}{c|c} Mark &1 & 2 & 3 & 4 & 5 & 6 \ \hline Frequency & 5 & 3 & 6 & 4 & 2 & 5\end{array}\), find the mode of the distribution.
\(\begin{array}{c|c} Mark &1 & 2 & 3 & 4 & 5 & 6 \ \hline Frequency & 5 & 3 & 6 & 4 & 2 & 5\end{array}\), find the mode of the distribution.
A
2
B
3
C
5
D
6
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38
If the probability of an event occurring is x, what is the probability of the event not occurring?
A
1 - x
B
x - 1
C
0
D
\(\frac{1}{x}\)
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39
The table shows the ages(in years) of twenty children chosen at random from a community. What is the mean age? \(\begin{array}{c|c} Age(years) & 1 & 2 & 3 & 4 & 5 \ \hline {\text {Number of children}} & 2 & 3 & 5 & 6 & 4 \end{array}\)
A
4.46 years
B
3.35 years
C
3.30years
D
3.00 years
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40
The table shows the ages(in years) of twenty children chosen at random from a community. What is the median of the distribution? \(\begin{array}{c|c} Age(years) & 1 & 2 & 3 & 4 & 5 \ \hline {\text {Number of children}} & 2 & 3 & 5 & 6 & 4 \end{array}\)
A
3.5 years
B
3.0 years
C
2.5 years
D
2.0 years
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