2001 - WAEC Mathematics Past Questions and Answers - page 5

41
In the diagram, MN||PQ, |LM| = 3cm and |LP| = 4cm. If the area of ∆LMN is 18cm2, find the area of the quadrilateral MPQN
A
3cm2
B
6cm2
C
14cm2
D
24cm2
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42

The diagram shows a triangular prism of length 7cm. The right - angled triangle PQR is a cross section of the prism |PR| = 5cm and |RQ| = 3cm. What is the area of the cross-section?

A
4 cm2
B
6cm2
C
15cm2
D
20cm2
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43

The diagram shows a triangular prism of length 7cm. The right - angled triangle PQR is a cross section of the prism |PR| = 5cm and |RQ| = 3cm. What is the volume of the prism?

A
28cm2
B
42cm2
C
70cm2
D
84cm2
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44

A solid cylinder of radius 7cm is 10 cm long. Find its total surface area.

A
\(70\pi cm^2\)
B
\(189\pi cm^2\)
C
\(210\pi cm^2\)
D
\(238\pi cm^2\)
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45

PQRS is a trapezium in which |PS| = 9cm, |QR| = 15cm, |PQ| = \(2\sqrt{3}, \angle PQR = 90^o and \angle QRS = 30^o\). Calculate the area of the trapezium

A
\(24\sqrt{3} cm^2\)
B
\(36\sqrt{3} cm^2\)
C
\(42\sqrt{3} cm^2\)
D
\(72\sqrt{3} cm^2\)
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46

The variance of a given distribution is 25. What is the standard deviation?

A
125
B
75
C
25
D
5
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47

Given that P = {b, d, e, f} and Q = {a, c, f, g} are subsets of the universal set U = {a,b, c, d, e, f, g}. Find P' ∩ Q

A
{a,c}
B
{a, c, d, g}
C
{c, d, g}
D
{a, c, g}
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48

What is the length of \(\bar{RP}\)?

A
6
B
5
C
3
D
2
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49

The number line represents

A
0 > x \(\geq\) -7
B
-7 \(\leq\) x < -1
C
-7 < x \(\leq\) -1
D
-7 < x < -1
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