Waec Mathematics 1989 Past Questions and Answers

Question 21:

• WAEC 1989

In the diagram above, O is the center of the circle. Calculate the length of the chord AB if |OA| = 5cm, |OD| = 3cm and ∠AOD = ∠BOD

A. 3cm
B. 4cm
C. 5cm
D. 8cm
E. 15cm

Question 22:

• WAEC 1989

Calculate the surface area of a hallow cylinder which is closed at one end, if the base radius is 3.5cm and the height 8cm.[take π = 22/7]

A. 126.5cm²
B. 165cm²
C. 176cm²
D. 214.5cm²
E. 253.5cm²

Question 23:

• WAEC 1989

Solve the following equation: 6x\(^2\) - 7x - 5 = 0

A. X = ¹/₂ or x = -2¹/₂
B. X = 1/3 or x = 2¹/₂
C. X = 1 ²/3 or x = -¹/₂
D. X = 1²/3 or x = ¹/₂
E. X = 5/6 or x = -1

Question 24:

• WAEC 1989

What angle represents grown up girls ? Correct to one decimal place

A. 37.5^o
B. 26.7^o
C. 25.7^o
D. 20^o
E. 3.75^o

Question 25:

• WAEC 1989

What percentage of the population are married? correct to one decimal place

A. 14.8%
B. 20.4%
C. 30.5%
D. 35.2%
E. 36.5%