Waec Mathematics Past Questions and Answers

Question 711:

• WAEC 2000

Find the volume (in cm\(^3\)) of the solid shown above

A. 100cm³
B. 150cm³
C. 175cm³
D. 250cm³

Question 712:

• WAEC 2000

Solve the equation 3 + 5x - 2x² = 0

A. \(-\frac{1}{2},-3\)
B. 2, 3
C. -2, 3
D. \(-\frac{1}{2},3\)

Question 713:

• WAEC 2000

If the simple interest on N2000 after 9 months is N60, at what rate per annum is the interest charged?

A. \(2\frac{1}{4}\)%
B. 4%
C. 5%
D. 6%

Question 714:

• WAEC 2000

(a) Evaluate and express your answer in standard form : \(\frac{4.56 \times 3.6}{0.12}\)
(b) Without using mathematical tables or calculator, evaluate \((73.8)^{2} - (26.2)^{2}\).
(c) Simplify \(\sqrt{1\frac{19}{81}}\), expressing your answer in the form \(\frac{a}{b}\) where a and b are positive integers.

Question 715:

• WAEC 2000

(a) Given that \(\cos x = 0.7431, 0° < x < 90°\), use tables to find the values of : (i) \(2 \sin x\) ; (ii) \(\tan \frac{x}{2}\).
(b) The interior angles of a pentagon are in ratio 2 : 3 : 4 : 4 : 5. Find the value of the largest angle.