Waec Mathematics 2005 Past Questions and Answers

Question 41:

• WAEC 2005

The angle of elevation of the top of a cliff 15 meters high from a landmark is 60^o. How far is the landmark from the foot of the cliff? Leave your answer in surd form

A. \(15\sqrt{3}m\)
B. \(15\sqrt{2}m\)
C. \(10\sqrt{3}m\)
D. \(5\sqrt{3}m\)

Question 42:

• WAEC 2005

XOY is a real sector of a circle center O of radius 3.5cm which subtends an angle of 144^o at the center. Calculate, in term of ϖ, the area of the sector

A. 1.4ϖcm²
B. 2.8ϖcm²
C. 4.9ϖcm²
D. 9.8ϖcm²

Question 43:

• WAEC 2005

A rectangular packet has inner dimension 16cm by 12cm by 6cm. How many cubes of sugar of side 2cm can be neatly packed into the packet?

A. 90
B. 144
C. 150
D. 288

Question 44:

• WAEC 2005

If \(y \alpha \frac{1}{x^2}\) and \(y = 1\frac{1}{4}\) when x = 4, find the value of y when \(x = \frac{1}{2}\)

A. \(2\frac{1}{2}\)
B. 5
C. 10
D. 80

Question 45:

• WAEC 2005

Ladi sold a car for N84,000 at a loss of 4%. How much did ladi buy the car

A. 80,500
B. 80,640
C. 87,360
D. 87,500