Waec Mathematics Past Questions and Answers

Question 71:

• WAEC 1989

If twice a certain integer is subtracted from 5 times the integer, the result is 63. Find the integer.

A. 21
B. 9
C. 7
D. 4
E. 3

Question 72:

• WAEC 1989

If 3\(^y\) = 243, find the value of y.

A. 2
B. 3
C. 4
D. 5
E. 6

Question 73:

• WAEC 1989

Points X and Y are respectively 20km North and 9km East of a point O. What is the bearing of Y from X? Correct to the nearest degree

A. 024^o
B. 114^o
C. 156^o
D. 204^o
E. 336^o

Question 74:

• 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 75:

• 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