Year : 
2006
Title : 
Mathematics (Core)
Exam : 
WASSCE/WAEC MAY/JUNE

Paper 1 | Objectives

41 - 46 of 46 Questions

# Question Ans
41.

In the diagram, PQR is a straight line, QRST is a parallelogram, < TPQ = 72o and < RST = 126o. What type of triangle is \(\bigtriangleup\) PQT?

A. An equilateral triangle

B. A right-angled triangle

C. An isosceles triangle

D. A scalene triangle

C

42.

How many pupils took the test?

A. 36

B. 38

C. 39

D. 40

Detailed Solution

No. of pupils = 1 + 3 + 4 + 7 + 8 + 6 + 6 + 4 + 1 = 40
43.

If the pass mark was 4. What percentage of the pupils failed the test?

A. 20.0%

B. 37%

C. 62.5%

D. 80.0%

Detailed Solution

No. of pupils that failed = 1 + 3 + 4 + 8

% failed = \(\frac{8}{40} \times 100\)% = 20.0%
44.

The diagram shows an arc MN of a circle, centre O, with 10cm. If < MON = 72o. calculate the length of the arc, correct to three significant figures. [Take \(\pi = \frac{22}{7}\)]

A. 6.28cm

B. 12.6cm

C. 22.6cm

D. 62.8cm

Detailed Solution

Length of arc = \(\frac{\theta}{360 \times 2 \pi r}\)

= \(\frac{72}{360} \times 2 \times \frac{22}{7} \times 10\)cm

= 12.57

= 12.6cm(3 s.f)
45.

In the diagram what is x + y in terms of z?

A. 180o - z

B. 180o + z

C. z - 180o

D. z

Detailed Solution

x + y + z = 180(sum of angles in a \(\bigtriangleup\))

x + y = 180 - z
46.

In the diagram |XY| = 12cm, |XZ| = 9cm, |ZN| = 3cm and ZY||NM, calculate |MY|

A. 3cm

B. 4cm

C. 5cm

D. 6cm

Detailed Solution

\(\frac{|YM|}{|YX|} = \frac{|ZM|}{|ZX|}\)

\(\frac{|YM|}{12} = \frac{3}{9}\)

|YM| = 3 x \(\frac{12}{9}\)

|MY| = 4cm
41.

In the diagram, PQR is a straight line, QRST is a parallelogram, < TPQ = 72o and < RST = 126o. What type of triangle is \(\bigtriangleup\) PQT?

A. An equilateral triangle

B. A right-angled triangle

C. An isosceles triangle

D. A scalene triangle

C

42.

How many pupils took the test?

A. 36

B. 38

C. 39

D. 40

Detailed Solution

No. of pupils = 1 + 3 + 4 + 7 + 8 + 6 + 6 + 4 + 1 = 40
43.

If the pass mark was 4. What percentage of the pupils failed the test?

A. 20.0%

B. 37%

C. 62.5%

D. 80.0%

Detailed Solution

No. of pupils that failed = 1 + 3 + 4 + 8

% failed = \(\frac{8}{40} \times 100\)% = 20.0%
44.

The diagram shows an arc MN of a circle, centre O, with 10cm. If < MON = 72o. calculate the length of the arc, correct to three significant figures. [Take \(\pi = \frac{22}{7}\)]

A. 6.28cm

B. 12.6cm

C. 22.6cm

D. 62.8cm

Detailed Solution

Length of arc = \(\frac{\theta}{360 \times 2 \pi r}\)

= \(\frac{72}{360} \times 2 \times \frac{22}{7} \times 10\)cm

= 12.57

= 12.6cm(3 s.f)
45.

In the diagram what is x + y in terms of z?

A. 180o - z

B. 180o + z

C. z - 180o

D. z

Detailed Solution

x + y + z = 180(sum of angles in a \(\bigtriangleup\))

x + y = 180 - z
46.

In the diagram |XY| = 12cm, |XZ| = 9cm, |ZN| = 3cm and ZY||NM, calculate |MY|

A. 3cm

B. 4cm

C. 5cm

D. 6cm

Detailed Solution

\(\frac{|YM|}{|YX|} = \frac{|ZM|}{|ZX|}\)

\(\frac{|YM|}{12} = \frac{3}{9}\)

|YM| = 3 x \(\frac{12}{9}\)

|MY| = 4cm