Waec Mathematics Past Questions and Answers

Question 136:

• WAEC 1990

Find the value of m which makes x\(^2\) + 8 + m a perfect square

A. 2
B. 4
C. 8
D. 12
E. 16

Question 137:

• WAEC 1990

Solve the equation 2a\(^2\) - 3a - 27 = 0

A. 3/2, 9
B. -2/3, 9
C. 3, 9/2
D. -3, -9/2
E. -3, 9/2

Question 138:

• WAEC 1990

A sector of a circle of radius 7cm has an area of 44cm². Calculate the angle of the sector correct to the nearest degree [Take π = 22/7]

A. 6^o
B. 26^o
C. 52^o
D. 103^o
E. 206^o

Question 139:

• WAEC 1990

calculate the surface area of a sphere of radius 7cm [Take π = 22/7]

A. 86cm²
B. 154cm²
C. 616cm²
D. 1434cm²
E. 4312cm²

Question 140:

• WAEC 1990

If the radius of the parallel of latitude 30°N is equal to the radius of the parallel of latitude θ°S, what is the value of θ?

A. 75^o
B. 60^o
C. 45^o
D. 30^o
E. 0^o