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
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
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
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
\(238\pi cm^2\)
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
\(72\sqrt{3} cm^2\)
46
The variance of a given distribution is 25. What is the standard deviation?
A
125
B
75
C
25
D
5
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}
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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