Waec Mathematics Past Questions For Year 1998
Question 56
In the diagram above, |PQ| = |PR| = |RS| and ∠RSP = 35o. Find ∠QPR
- A. 70o
- B. 50o
- C. 45o
- D. 40o
- E. 35o
Question 57
Find the curved surface area of a cone of radius 3cm and slant height 7cm (\(take \pi = \frac{22}{7}\)
- A. \(22cm^2\)
- B. \(44cm^2\)
- C. \(66cm^2\)
- D. \(132cm^2\)
- E. \(198cm^2\)
Question 58
The side of a square is increased from 20cm to 21cm. Calculate the percentage increase in its area
- A. 2.5%
- B. 9.3%
- C. 10.0%
- D. 10.25%
Question 59
A trader makes a loss of 15% when selling an article. Find the ratio, selling price : cost price
- A. 3:20
- B. 3:17
- C. 17:20
- D. 20:23
Question 60
Evaluate \(3.0\times 10^1 - 2.8\times 10^{-1}\)leaving the answer in standard form
- A. \(2\times 10^{-1}\)
- B. \(2\times 10^{2}\)
- C. \(2.972 \times 10^{1}\)
- D. \(2.972 \times 10^{2}\)
