Mathematics 2011 Waec Past Questions and Answers

Question 11 :

• WAEC 2011

The cross section section of a uniform prism is a right-angled triangle with sides 3cm. 4cm and 5cm. If its length is 10cm. Calculate the total surface area

A. 142cm²
B. 132cm²
C. 122cm²
D. 112cm²

Question 12 :

• WAEC 2011

From the equation whose roots are x = \(\frac{1}{2}\) and -\(\frac{2}{3}\)

A. 6x² - x + 2 = 0
B. 6x² - x - 2 = 0
C. 6x² + x + 2 = 0
D. 6x² + x - 2 = 0

Question 13 :

• WAEC 2011

Simplify \(\frac{\log \sqrt{27}}{\log \sqrt{81}}\)

A. 3
B. 2
C. \(\frac{3}{2}\)
D. \(\frac{3}{4}\)

Question 14 :

• WAEC 2011

Which of these angles can be constructed using ruler and a pair of compasses only?

A. 115^o
B. 125^o
C. 135^o
D. 145^o

Question 15 :

• WAEC 2011

The perimeter of a sector of a circle of radius 4cm is (\(\pi + 8\))cm. Calculate the anle of the sector

A. 45^o
B. 60^o
C. 75^o
D. 90^o