Waec Mathematics Past Questions For Year 2018
Question 46
A piece of thread of length 21.4cm is used to form a sector of a circle of radius 4.2cm on a piece of cloth. Calculate, correct to the nearest degree, the angle of the sector. [Take \(\pi = \frac{22}{7}\)]
- A. 170\(^o\)
- B. 192\(^o\)
- C. 177\(^o\)
- D. 182\(^o\)
Question 47
The graph of y = x\(^2\) and y = x intersect at which of these points?
- A. (0,0), (1,1)
- B. (0,0), (0,1)
- C. (1, 0), (0, 0)
- D. (0, 0) (0, 0)
Question 48
A curve is such that when y = 0, x = -2 or x = 3. Find the equation of the curve.
- A. y = \(x^2 - 5x - 6\)
- B. y = \(x^2 + 5x - 6\)
- C. y = \(x^2 + x - 6\)
- D. y = \(x^2 - x - 6\)
Question 49
In the diagram, WXYZ is a rectangle with diamension 8cm by 6cm. P, Q, R and S are the midpoints of the rectangle as shown. Using this information calculate the area of the part of the rectangle that is not shaded
- A. 25cm\(^2\)
- B. 24cm\(^2\)
- C. 16cm\(^2\)
- D. 12cm\(^2\)
Question 50
In the diagram, PS and RS are tangents to the circle centre O,
- A. 110\(^o\)
- B. 135\(^o\)
- C. 165\(^o\)
- D. 225\(^o\)
