Waec Mathematics 2005 Past Questions and Answers

Question 26:

• WAEC 2005

Given that the root of an the equation \(2x^2 + (k+2)x+k=0\) is 2, find the value of k

A. -4
B. -2
C. -1
D. \(-\frac{1}{4}\)

Question 27:

• WAEC 2005

Find the mean of the numbers 1, 3, 4, 8, 8, 4 and 7

A. 4
B. 5
C. 6
D. 7

Question 28:

• WAEC 2005

What is the total surface area of a closed cylinder of height 10cm and diameter 7cm? [Take \(\pi = \frac{22}{7}\)]

A. 77cm²
B. 227cm²
C. 297cm²
D. 374cm²

Question 29:

• WAEC 2005

An arc of a circle of radius 14cm subtends angle 300^o at the center. Find the perimeter of the sector formed by the arc

A. 14.67cm
B. 42.67cm
C. 101.33cm
D. 543.33cm

Question 30:

• WAEC 2005

which of the following statements describes the locus of a point R which moves in a plane such that its equidistant from two intersecting lines?

A. The bisector of the angle formed by the lines
B. The point of intersection of the two lines
C. A cone, with two intersecting lines as slant height
D. A circle, with the point of intersection of the two lines as the center